Point taken. I've seen them do that for Youtube as well -- basically, they don't include Youtube vids in your data plan if you are ok with them degrading the video experience (and you can disable that sort of "feature"). However, this doesn't seem very compelling -- some of the things cable modem providers have done (DPI, injecting SYN or RST's into traffic) can end up far worse, but customers only put up with nonsense like that for so long (unless it's a de facto monopoly in that area).