StubHub's 200 Million Ticket Buyers Just Got Sent to Arbitration. Nobody's Modeled the Completion Problem.

Judge Rakoff sent the StubHub class action into individual arbitration last month. The headlines focused on the win for StubHub. The plaintiff bar focused on the loss of a class vehicle.

Almost nobody is talking about the actual problem that comes next.

If plaintiff firms want to build a mass arbitration campaign out of the StubHub ruling, they need to sign up individual ticket buyers who never raised their hands as claimants. These are people who bought tickets, clicked through terms of service, and went to a concert. They did not fill out an intake form. They did not respond to an ad. They did not opt into anything.

That is a completion problem disguised as an acquisition problem. And the firms that treat it like a standard mass arb campaign will burn six figures learning the difference.

Class Action Claimants and Arbitration Claimants Are Different People

In a class action, you file on behalf of a class. The members don't have to do anything until notice goes out, and even then, most don't. The FTC's median claims rate for class actions sits around 9%. Everyone knows this. Nobody loves it. But the economics work because the class vehicle carries the passive members.

Mass arbitration flips that. Every single claimant has to sign an engagement agreement, provide identifying information, and file an individual demand. There is no passive ride-along. The claimant either participates or they don't exist in your filing.

When a court sends a class action into individual arbitration, you inherit a pool of potential claimants who expected to do nothing. Now you need them to do three things: sign, verify, file. That conversion rate is not going to look like your typical mass arb campaign where claimants responded to targeted ads and self-selected into the process.

The Outreach Math Is Backwards

In a standard mass arb campaign, your funnel looks like this: ad spend produces leads, leads convert to signed claimants, signed claimants get filed. You control the top of the funnel. You know who responded. You have consent to contact them. Your CPA model works because you built the audience.

In a class-to-arb conversion, the funnel is inverted. You have a universe of affected consumers (StubHub has processed hundreds of millions of transactions). You have no relationship with them. You may not even have reliable contact information beyond what discovery or public records can surface. And you need to reach them, explain what happened, convince them to sign, and keep them engaged through filing.

That is not an acquisition campaign. That is a completion campaign that starts before you have any claimants at all.

The per-claimant outreach cost in this scenario is not $10 or $20. It is whatever it costs to find a consumer who bought a StubHub ticket sometime in the relevant period, reach them through a channel they actually check, explain a legal process most people have never heard of, and get them to sign documents. Then do it again for the ones who don't respond the first time. Or the second. Or the fifth.

The Consent Chain Problem Nobody Mentions

Here is where it gets operationally interesting. You cannot just blast SMS to a list of StubHub customers. You do not have TCPA consent to text them. You do not have prior express written consent to call them with prerecorded messages. The FCC's recent channel-specific consent revocation rules make this even more granular: consent for one channel does not transfer to another.

So your outreach plan needs to account for building consent from scratch. That means your first touch is probably email (CAN-SPAM compliant, not TCPA regulated in the same way) or direct mail. Your second touch depends on what the first touch produces. If someone clicks and provides a phone number with consent, you can add SMS and voice. If they don't, you are back to email and mail.

This is the kind of channel sequencing that legacy claims administrators were never built to handle. They send a notice. They send a reminder. They file a report. The completion rate is whatever it is.

A mass arb completion stack needs to run like a sales funnel: first touch, second touch, escalation, channel switching, re-engagement at week four, week eight, week twelve. Each touchpoint needs its own consent record. Each channel needs its own opt-out tracking. The FCC's new rules mean an opt-out from SMS does not kill your email channel, but only if your stack tracks them separately.

The Timeline Compounds the Problem

StubHub's arbitration clause routes claims through AAA under consumer rules. AAA's mass arbitration procedures kick in at 25 similar demands. But the procedural timeline for mass arb under AAA includes batching, potential bellwether selection, and staged proceedings that can stretch 12 to 18 months.

That means you need to keep claimants engaged across a timeline that is dramatically longer than the window most people pay attention to anything. A ticket buyer who signs up in month one needs to still be reachable, responsive, and cooperative in month fourteen when their batch comes up for hearing.

Every month that passes, your signed-claimant pool decays. People change phone numbers. They stop checking the email address they used. They forget they signed anything. The completion rate you modeled at signing is not the completion rate you will have at resolution.

The firms that win these campaigns are the ones that build decay into their models from day one and budget for re-engagement cycles that most administrators don't offer because every additional touch is a cost hit against their margin.

What This Actually Looks Like in Practice

If you are a plaintiff firm considering a StubHub mass arb campaign, here is the math you need to run before you spend a dollar:

1. Addressable universe: How many affected consumers can you actually identify and reach? Not the total transaction count. The number you can contact with a compliant first touch.
2. First-touch conversion rate: What percentage of cold outreach to consumers who never opted in will produce a signed engagement? Plan for low single digits. If you budget for 10% and get 2%, your CPA just quintupled.
3. Multi-touch conversion rate: What does your conversion look like after 6, 8, 12 touches across channels? This is where the real volume comes from, but only if your stack supports it.
4. Decay rate: What percentage of signed claimants will become unreachable before their batch is heard? Model 15 to 25% over 12 months if you are using a single-channel outreach approach. Model 8 to 12% if you own multi-channel infrastructure with re-engagement automation.
5. Per-claimant completion cost: Not your CPA. Your cost to take a signed claimant through filing, engagement, hearing, and resolution. This is where the economics live or die.

The Ticketing Vertical Is Real. The Completion Infrastructure Is the Bottleneck.

StubHub is not an isolated event. The Second Circuit and Nevada Supreme Court have both recently addressed Live Nation arbitration enforcement. Courts are validating that ticketing companies can compel individual arbitration. That means the ticketing vertical is open for mass arb campaigns in a way it was not two years ago.

But the opportunity is only as good as your ability to complete. A firm that signs 5,000 StubHub claimants and completes 3,800 of them through resolution will make money. A firm that signs 5,000 and watches 2,000 decay before hearing will wish it had never started.

The difference is not legal strategy. It is outreach infrastructure. Native document signing so claimants can execute from their phone in 90 seconds. SMS and email delivery that tracks consent and revocation by channel. An AI layer that handles the routine inquiries (status checks, timeline questions, document re-sends) that would otherwise require a human for every single interaction. And a dashboard that shows you, in real time, which claimants are engaged, which are going dark, and which need a different channel before they disappear.

That is what completion looks like when the claimants did not come to you. You have to go get them, sign them, and then keep them. Three separate problems. One stack.