@J12t A few things:
1. Many people here don't want to be part of any commercial social media, regardless of whether it's Twitter or not.
2. It doesn't have to be a winner take a competition. Twitter was never the largest SM. Also, most people here don't make money doing this, so no one here is being squeezed out.
3. If they do federate, people can interact with people there, but with no ads, and no invasive tracking. That may pull people here from there.