A lot of the Open Source LLMs community (Huggingface, etc) are using the OpenAI API interface (REST HTTP interface) so that, in the event any of us OpenAI developers need it leave (due to any future overzealous censorship or alignment) we will have a smoother transitional path over to the Open Source world.
The recent shakeup at OpenAI just shows why letting one company monopolize the space would be bad. I think even Altman agrees with this opinion, so I’m not being anti OpenAI in any way whatsoever, to say this.