Since when? It starts with computers, the main tool and it's architecture not being free and goes from there. Major compilers used to not be free. Major IDEs used to not be free. For most things there were decent and (sometimes) superior free alternatives. The same is true for LLMs.
> The excuse "but you earn six figures, what' $200/month to you?" doesn't really capture the issue here.
That "excuse" could exactly capture the issue. It does not, because you chose to make it a weirder issue. Just as before: You will be free to either not use LLMs, or use open-source LLMs, or use paid LLMs. Just as before in the many categories that pertain to programming. It all comes at a cost, that you might be willing to pay and somebody else is free to really does not care that much about.