1. I agree - there are absolutely scenarios in which it can make sense to buy a GPU and run it yourself. If you are managing a software firm with multiple employees, you very well might break even in less than a few years. But I would gander this is not the case for 90%+ of people self-hosting these models, unless they have some other good reason (like gaming) to buy a GPU.
2. I basically agree with your caveats - excluding electricity is a pretty big exclusion and I don't think that you've had 3 years of really high-value self-hostable models, I would really only say the last year and I'm somewhat skeptical of how good for ones that can be hosted in 24gb vram. 4x4090 is a different story.
2. I basically agree with your caveats - excluding electricity is a pretty big exclusion and I don't think that you've had 3 years of really high-value self-hostable models, I would really only say the last year and I'm somewhat skeptical of how good for ones that can be hosted in 24gb vram. 4x4090 is a different story.