Still, if people don’t interact with Threads content, that effectively keeps them separate.
Also, come to think of it, what’s keeping companies from “vacuuming” everyone’s data without actually having a public instance that has users interacting with posts on other instances? Example: Instance A exists. What’s stopping a company that runs Instance B, which doesn’t have any active users on it, from taking all the available data from Instance A? Genuine question, by the way. I haven’t exactly kept up with the technical workings of Lemmy very well.