

Probably not the best advice considering the current economic situation but you could cut your losses and restart on Steam. Buy the games there and your kids can probably still do what they did on Xbox. You probably already know this but Steam has a Big Picture Mode which makes it more controller friendly and nicer for large TV displays. Keep a keyboard and mouse handy for when things need technical support.
While it sucks that FOSS projects will have their funding sapped, let’s remember why the open source model is used in the first place: it can’t be bought. If it goes down, someone will just fork the last known repository and have it up and running again.