If I were doing this, it would be a high-quality IPTV (VOD, streaming) and customized network configuration for hotels. i.e. I want my 2000 room conference hotel to let people have ethernet ports in room and in attached conference center booth on effectively the same VLAN at least. I'd also like to offer 30-50Mbps down and 10-20Mbps up to hotel guests.

You'd have a lot easier time going after LodgeNet, etc., with far lower engineering costs, and still have a chance of doing innovative licensing, than as a cable company doing residential service. After that, you can expand to IPTV for public exhibition (bars, etc.). Maybe partner with someone like Sirius who does radio for those environments and offer a video and vod service.

Several orders of magnitude less capex, a much smaller minimum feasible size (you could be profitable on ~20 big city hotels, I think), easier licensing, and far less regulation (at the local government level).