ok, what you do when someone modifies the product you're using so you cant continue to use it the way you did before, and you cant fix it or alter it due to legal or community reasons? you move away to different product.

what the people who use/develop kernel would do when they become unable to modify large part of kernel code that is highly needed for their work?

business doesnt work like typical consumer, there is no "products" that they pick from the big market