What about making it so buying a certain amount of GM is required in order to play the game, but only a certain amount of GM is allowed per match? This would make it a lot more fair and assure that there's at least some strategy behind GM use. It wouldn't be "person who spends the most money wins" anymore as everyone would have the same amount.
That is tantamount to the company saying "Please, don't give us anymore money here!" and has been turned down by Bytro many, many times. The underlying assumption here is at all times that: gameplay < immediate revenue