Any large company will go this way eventually. People who use a LOT of bandwidth are being subsidized by those who don't.
While agreeing in general that TW sucks diseased donkey balls, I've never figured why people get all righteous whenever this topic comes up. People using a lot of bandwidth means a provider has to get more connectivity to their backbone, upgrade infrastructure, etc. and none of that is free. Do you expect to be able to drive 100,000 miles a year for the same cost as someone who drives 6,000 miles a year? Feed a family of six for the same price as a single person? Pay the same each month for your iPhone as someone with generic cell phone on a 400 minute/month plan? Pay no more to live in a 5,000 square foot house than someone in a 500 square foot apartment?
Robert Heinlein (whose political theology I otherwise disagree with) said it best: TANSTAAFL. If you are using 10x what the average user does, someone's eventually going to have to pay for it, and expecting it to be everyone else is simply wishful thinking.