No matter how much you think Ronaldo has made, how much you think Messi has made or Neymar likewise, those guys are still concerned about what they recieve. They are not ready to do charity work with their career. They will always care for the pay. If they won't care for the pay, Messi wouldn't have left Barcelona and also Ronaldo would have reduced his pay to leave Manchester United this closed window.
It's sad that you think that way about those players, yet they have done a number of charities that some of us can just dream of. They are human too, not some sorts of Robots or something like that. If you doubt, just try checking out on the search engines about the charities.
It was all Barcelona's fault that Messi had to leave. Let's stop turning guns to Messi.