The percentages are giving people the impression that they're being somehow censored by Facebook. Blame is being assigned as a desperate monetary gambit in the wake of Facebook's disappointing debut on Wall Street.
This is a little ridiculous, as Facebook still has more than enough money to buy the world a Coke, and still have plenty left over to pour one out on every grave ever dug then start a private space program to seek out life that has never had a Coke. If the cost of time travel was a dollar per year traveled into the past then Facebook could take my entire high-school graduating class to see a Tyrannosaurus. They don't need your $5, is my point.
That's not to say they don't want it, of course. Part of the reason for Facebook's stock price tumble was a belief that significant further growth isn't possible. Allowing people to buy greater range for posts they are particularly keen to be seen by all, not just dedicated fans, is a good business decision. I highly recommend bands look into paid ads on Facebook, as you can have some significant success.
Now, I'm going to say this last bit as calmly and rationally as I can. Bands? Stop being such self-entitled, whiny, ungrateful brats. Just because Facebook is free doesn't make it a goddamned right. You get free Web hosting, a song player, and a chance to interact with people on a level that still seems like black magic, and you don't have to pay a dime.
In return, Facebook shows ads and sets the rules. It's a business deal, and if you don't like the terms, then focus on your own official Web site.