But while that’s a very lucky thing to have, the issue is that we depend on the owner of Mastodon to not sell the company to a billionaire.
We don't depend on that. Buying Mastodon would get them the branding but not Mastodon itself. It's all GPL/AGPL and would be forked immediately if sold. The buyer would have no control over it.
Oracle may have owned OpenOffice but it didn't matter. Everyone uses LibreOffice now. Same shit.