I wasn't admonishing you, just pointing out that, while an important topic, it's not one we can really dig into here.
Short answer, though; athletes aren't the villains in a system where profit motive goes a long way to determining incomes and wealth distribution.
I'm not an anti-capitalist, by the way. We simplify these issues too much into labels and bullet points. We can do a lot better than we're doing, however, as you described.