It's true that people ought to earn enough to make a decent living. And it's true that people like doctors and teachers ought to be better appreciated for the work they do. These are issues that should and can be addressed. But football has nothing to do with them.
At the end of the day, football profits so much because it's popular, because it's what the people want. Owners and corporations wouldn't pour so much money into their clubs if no one cared about football. But as it is, people care so much about football that it drives this economic process. What the people want is where the money goes; that's just how the free market economy works.