You are not paid a king's ransom as a footballer unless you become one of the very best, like in most fields really. Some can hammer out a tune, and others are brilliant instrumentalists. Some can paint and nobody would pay for their work, others are brilliant painters whose works are worth fortunes. Some might not like that, but it is the way of the world and pretty much always has been. And of course some people who have never achieved anything will moan about that state of affairs, as they pretty much always have.