Sorry, but that's BS. Berlusconi didn't destroy football when he was buying everything that moves in the late 80's and early 90's. Noone had a chance to buy a football player if Milan wanted the guy. Back in mid 2000's Abramovich did exactly the same thing Berlusca used to do, just that he didn't have as much success in Europe.
Milan had history though, Chelsea had nothing at all, and spent like 150 million in one year dude
