While it's DEFINITELY not a bad idea to not put all eggs in one basket and prevent stuff from even happening in the first place, i think this person is worrying too much about the consequences. We do have a recent important precedent of a very public corporate takeover of a very popular free software service: The Freenode IRC takeover. After the nutcase effectively took over the network's ownership, people just... left. They remade the service elsewhere (Libera.Chat) and everybody moved, making the takeover meaningless. So, if worst comes to worst i don't think there's gonna be a problem. Here's the info on Wikipedia of the event and the exodus to Libera Chat