Right. How often are you collaborating with users who agree to only use vanilla Ableton plugins? Every time I've collaborated we have to start the conversation with what plugins we share, which ones are freely available, which ones would are not cost prohibitive for the other side to acquire, and so on.

That said, I think that vanilla Ableton provides a whole lot to collaborate with. Maybe there are a lot of people for whom the base set works, but "do you have Apollo UAD + the Neve preamp plugin?" or something like it is not a rare occurrence.