What you do for a living isn't neutral, there's an opportunity cost. That person in Kenya writing an essay for someone else isn't doing journalism or writing a great novel, or starting a business or whatever. Now, for sure, Kenya isn't the best place for doing those things anyway, but it's never going to be if a whole pool of labor is doing bullshit work like grinding out college-level essays. There's no path from where Kenya is today (not great, not as bad as you might think though) to where the West is where work like that is a part of its economy, is there?