Why aren't the players, coaches, and media betting on games?

I remember watching Allen Iverson talk about the NBA all star game a few ago and he said something like, "I told people I know to take all their money and bet it on this game because I knew we would win." Of course the East did win that game but it got me to thinking, how can players, coaches, and media resist the temptation of betting on games?

No one knows the game like the players and coaches, they have ALL the inside information. A perfect example:

In the WNBA about a week ago, Houston and Seattle were "battling" for playoff positioning. There was just one problem, Seattle rested their best player for the last two games and I figured out what seemed obvious: they wanted the fourth seed (because they matched up much with the Sparks, the one seed). Because of their situation, that made their last two games MUST LOSE games. Sure enough, they lost both....

But, they could have collectively made millions on this (including their friends and families). Not only that, Houston's radio announcer admitted during the last game that Seattle was playing for the fourth seed... and it was obvious that he was aware that they were trying to lose (they lost by 20+ points, btw). He could have made a lot of money on this info too.

So, what's the deal? Wouldn't the system go bankrupt if these people were capitalizing on their oppurtunities? Or do they even try? If not, why not? It's free money!

And of course they can use third parties to bet, it can be anonymous if they want it bad enough.