Who really cares about these players?

This poses a good question. How much do the players care about themselves when day in and day out they take the risk of injuring their bodies for a chance at fame and a pay check. The average NFL player makes about $770,000, yet Football has the most contact and is the most dangerous sport of our elite leagues. You have NBA and MLB players who can sign a contract for $100 million or $254 million, get injured and still receive that money but then you have those NFL players whose job is to use their body to either score or stop the other team from scoring and if injured and you're not a hall of famer or a top ranked player you could lose that money at the drop of a hat or be let go from the team. Where as in the NBA or MLB you are tied to your contract and can be traded yes but under some stipulations you can still be paid what is owed to you as stated in your contract. So I ask you this question; What does this really say about our professional owners and commissioners? How is it that the league that causes the most injuries and damages the most players, pays their players the least amount of money?