That players of nowadays are more focus on making money rather than playing for passion like the old days.
But here, there is something they don't know about, first they don't know if your Interest is to study what they asked you or not but, to obey your parents you wouldn't have any choice than doing what they asked you to do. Same is applicable to your questions or what you want people to discuss here.
People knows that in football there is a huge payment if they finally becomes successful with it, but then most of them only put the interest to get recognized and after which they get to well known clubs to play you wouldn't see them having that passion instead they would focused on the amount to be paid by their clubs making it that hard for their clubs to pay, but most times when the clubs noticed their importance in their team they wouldn't have any choice to pay just to keep them on their clubs due to their performances.
What you see is common in every sector today, be it the entertainment industry same things happens, they aren't out there for the entertainment anymore but as a competitions to their fellow stars since they are being paid specific amount they also increases their values.