> What does a company do when they want to increase rates, or change their products? They send out a notification that starting on a certain date, the prices will go up. I don't think anyone objects to that.

Of course you do. I have a fixed contract with my mobile carrier - if they want to change rates, tough luck. Once the current contract expires, they can indeed notify me that the new contract will auto-renew with a new rate, and I can either accept it or choose a new carrier. But they very much can't change prices, or alter services rendered, while the current contract is in force.