People use AI because it is cheaper than paying humans to think. Soon you won’t really be able to find human thinkers.
If you can self host it that easily, any Joe can scale it out much like shared web hosting, and shared web hosting or even dedicated rented boxes has always been cheaper than the big cloud providers.
I don't think OpenAI or Anthropic can reasonable compete in the long term if they can't achieve "AGI", and they won't, no matter what shareholders desire.
It certainly disappear for their customers however.