Personally I wouldn't want a couple dozen apps installed all with their own model.

It seems easier to have industry specs that define a common interface for local models.

I also assume the OS can, or would need to, be involved in proving the models. That may not be a good thing depending on your views of OS vendors, but sharing a single local model does seem more like an OS concern.

I mean the openai API is the industry standard for allowing apps to communicate with models, llama-server has it, oMLX has it, ollama has it, vLLM has it, lmstudio as well. I don't think this is such a hard thing to do, but it requires people to set it up.