We love to hate on Microsoft here, but the fact is they are one of the most diversified tech companies out there. I would say they are probably the most diversified, actually. Operating systems, dev tools, business applications, cloud, consumer apps, SaaS, gaming, hardware. They are everywhere in the stack.

That's a "business" model, not a language model, which I believe is what the poster is referring to. In any case though, MS does have a number of models, most notably Phi. I don't think anyone is using them for significant work though.