The money to do this comes from somewhere. My location guesses: increased interest rates, and increased POS charges. All of which ultimately means less money for you, and less for everywhere you buy things.
Another interesting thing I've read somewhere, and would be interested in a link if someone knows of it: all/many of these higher-perk cards charge the merchants more when they're used. It's best for businesses if you use the most basic cards, or far better if you use cash.
But I just dislike credit card companies. And their "rating" systems. I must be cranky right now or something, because I feel like spreading the dislike :\