Your analogy isn't the same because poker is a game you're playing against other players, whereas most of the free-to-play games like farmville and over MMORPGs don't require you to compete directly with others for enjoyment in the game. Even so, pretty much every game has a system where you could buy better stuff to get ahead of the competition. With basketball, you couple spend a couple hundred bucks on shoes to gain some advantage. In paintball, billiards, golf, tennis, bowling, skateboarding, etc, you could spend hundreds or thousands of dollars on premium equipment that is a lot better than the stuff you rent if you're just a weekend player instead of having a serious hobby or playing professionally. Same goes with farmville. If you want to just play for fun, go for it... if you want to take it seriously (although I don't know why you would), you could pay a bit more money.