It’s got nothing to do with the kissing the badge, they’re professionals not amateurs and professionals work for what they’re worth and nothing less.
As example; Everyone knows that Messi has been paid hundreds of €millions by Barca but what some forget is that he‘s deserved every single cent of it because Barca have also made a mighty load of bunce out of their relationship.
What you need to get fixed in your thoughts is that Barca are quids in from employing Messi, they have profited massively from it, they have never paid him a single brass farthing out of love or charity, they’ve paid him to service their own self interest and filled their coffers from the proceeds of his efforts.
So, in a professional relationship where the employer has never tipped a dime in charity, why should you expect the employee to show charity in return?
As much as you may love your job, I don’t think you‘ll be rocking up to work on Monday to tell your gaffer you’ll take half wages going forwards, and I wouldn’t expect Messi to do that either.