You do realize that one of the big reasons the Dodgers have been able to go on this spending spree is that they HAVEN'T overpaid the Patrick Wisdom types, right? They had the right combination of money to spend, payroll flexibility, and ownership commitment, along with a very attractive situation both competitively and geographically.
Yes, it is true that the Dodgers have many advantages over other teams. The Cubs have some of those same advantages, but simply choose not to utilize them. I'm not opposed to the concept of a salary cap, but it wouldn't address all the disparities and we all know it is never going to happen anyway.