You're totally right, I'm in my own HPC bubble. The organizations I work with create their own models and it's easy for me to forget that's the exception more than the rule. I apologize for making too many assumptions in my previous comment.
Out of curiosity- do those orgs not find the loss of generality that comes from custom models to be an issue? e.g. vs using Llama or Mistral or some other open model?