I paid my rent and living expenses when pursuing my Masters degree by writing papers for services that helped undergrads cheat on class/term papers. I don't regret it at all. It helped me become a faster, more efficient author, and in my experience, the sort of student that would pay someone else to buy a paper will end up failing out one way or another regardless. I knew people that paid for papers in undergrand, an…
When you're profiting from it, it makes it hard to fairly assess those externalities. The rationalizing in your post is pretty apparent.
I think there are a lot of legitimate concerns about the idea of class grading and hiring metrics etc., but "I might as well profit from others' dishonesty" is maybe not the right way to respond to that.