Consider a competitive game where someone who normally sucks buys a game which is awesome. He is able to have fun with all of the free players who are just good, and doesn't always win because he sucks. He's suddenly like a mini-boss to the players who don't pay, and they feel awesome when they manage to defeat them, because even though that other player had paid power they still won. And players who are both good and pay are set to fight against other players who are good and pay.
Everyone is happy. It's not evil.