Sry, I‘m still not following. I don’t understand your argument, are you saying they want to federate to gain additional users to grab data from? Because I don’t think that’s going to be a significant amount of people.
Most people don’t care about what makes the fediverse desirable to its current users, all it does is add friction to them and therefore I don’t see it growing much either.
I think the reason why meta wants to federate is this:
it helps with anticompetitive arguments, because it’s “open” and not controlled by meta alone
some will refuse to use anything from meta, and threads users being able to communicate with them adds value
it won’t hurt meta, because the majority will be using their app anyways
it helps their image
I don’t think they’re doing it to “get more data” or to “take over the fediverse”. There’s nothing worth taking over and they can probably get the data anyways, it’s all openly available. So it’s basically all upside and no downside for them.