If this is what you truly believe, I can understand why you don't get it.
Are you going to deny the Kings don't have several players which are overpaid based on past performance? I'm not just talking about Kopitar.
Salaries for hockey players are a lot like buying a stock. You buy it based on its potential for growth. Hey, maybe I should go out and get 1,000 shares of IBM today. They sure were great back in the day.
I feel like you missed the point. In the real world nobody gets paid for future potential, they get paid based on their past results.