Earlier quoted context omitted.
They represent a real risk to the AI ecosystem IMO (or opportunity if you're an investor). They have really cornered the market on model hosting as well as frameworks for running them, it's going to get ugly when they start turning the screws. I think it's important for people to diversify away from them and not build anything that uniquely depends on them. It's not good to have chokepoints like this.
Do they really? As far as I can tell, diffusers/transformer are open sourced wrappers around torch implementations, there are a bunch of companies that are offering inference (just like they are), and there is some value in offering S3 storage to allow for model search. If they reach a point where they actively become community-hostile, someone will just fork their codebase and release a web app called "FaceHugger"
What they do isn't too hard to replicate, but the price for which they do it is impossible to compete with.