IPTV stands for "Internet protocol television" it is delivered through the same pipeline that the regular internet comes through, and as such the companies would have a hard time determining what data was used for the Internet connection and what was used to deliver TV programming. That isn't really the issue seeing as it's the chord cutters the cable companies are going to want to impose limits on. If 1 company starts this I would expect ALL the others to follow. They want to get at least $150 a month per subscriber, Internet only and the demise of the landline is hampering that, so they will find ways around it.