There has been no problems with the servers for ATT's UVerse service, in how it handles the IPTV streams. So again, do not call something out false, unless you have the proof to back it up. You will never see archaic services that use coax like Comcast, but Verizon is still working on it in its labs, and should have implemented it in the beginning.
As for eating into your download bandwidth, that is totally false, because there has been no real proof, other than a bunch of round table discussions of what can possibly happen. Nothing viable to prove that IPTV causes dowloading to come to screeching halt.
I have UVerse, and we have had three tvs on different HD channels, two computers streaming through Netflix, one tablet doing web browsing, no change in our downstream speeds for Internet browsing.
Verizon has so much available bandwidth with FiOS, it would not happen. On the other hand, services that utilize Coax to the home with Fiber to the nodes like Comcast, TWC, Cox, etc are not going to spend the money to restructure their infrastructure, and are actually serving up Internet in creative ways, and crippling their HD services. So in turn, coax served Pay to watch tv, would be the worst one to go with IPTV scheme.