ah, so what you are saying is this: now you can buy your own specialized hardware, which is realistically produced and sold by a single company on earth, compete with ~3 of the largest multinational corporations to do so (consider the ram prices lately, to get a sense of the effect of this competition), spend tens of thousands in the process, and run your 'own' model, which someone spends millions to train and makes it open for some reason (this is not a point about its existence, its about its reliability. I don't think its wise to assume the open models will be roughly in line with SOTA forever). This way, by spending roughly 1-2 orders of magnitude more, you can eliminate a handful of SaaS products that you use.

Sorry, I don't see this happening, at least not for the majority. Even if it does, it would still be arguably centralizing.