You should not think about how much players earn but you should think about how much people spend to watching football.
I'm Italian so I will give you the example of my country but I am sure that is happening the same situation everywhere.
Players earn much money because they help teams to earn money from championships prices. Where do you think the championships prizes come from?
They come from TV rights, tickets, shirts and other gadgets and sponsors.
TV rights prices are increasing season by season. In Italy to watch Serie A you have to spend 50€ per month. To watch a game at the stadium you have to spend 40€ (And you are in a place where you can't see anything).
The fact is that if people will stop to spend money on football, they won't give so big prizes and players won't earn so much money.
Is Roma still in the race for him?