Arkane lost a lot core members because of problems with the last game, so yes for them. Rocksteady lost their two founders because of Suicide Squad. They just dipped in the middle if production. Pretty clear that they didn't like the direction WB was taking the game. Rocksteady was developing this for 7 years. They need this to work. So I kind of would say yea, they are probably done. Bioware, they are gone since a long time ago my friend, even before the last mass effect. Naughty Dog is fine i think, but that's because sony noticed that everyone was failing at doing live service shit and had the sense to pull the plugs before it all went to shit.

Arkane might continue as in name, but just as a puppet. Once a videogame company loses its core members or founders, it's the start of the end. Rocksteady is the same. They lost their founders and they are banking a lot in their game. Current BioWare doesn't have a single drop of their original dna in it.