That's surprising. I thought the FCC banned those types of deals: http://arstechnica.com/tech-policy/2009/05/federal-court-uph...
These contracts aren't these evil things as much as they are there to recoup investment on the work AT&T put into that building. The neat part is that due to the cost of competitors walking in, the contracts don't even need to exist anymore. Its going to be a hard sell to get Comcast in there when AT&T already has the home field advantage.
If you're in our building, you're in luck, though: the HOA is amenable to laying CAT5, so if things go well, we may have Webpass by the end of 2015.