With those sorts of salaries a player should be able to score every time he gets the ball. The problem has been inflates salaries due to money laundering and not because the player is worth that amount. Football is dirty if you dig deeper and why the Chinese government has put a stop on various companies investing in European clubs. They need to push the reset button and have a capped salary system.
Ronaldo has a salary of 60 million euros a year, Juventus costs twice as much for taxation.
Last year the Champions League, from which it was eliminated in the round of 16, provided just over 80 million. Too little. Plus you have a whole team to pay salaries.
As you well said, this is the bottom for the most sustainable change. Teams started cutting salaries by 20%