I suggest that Netflix already is “another traditional cable company” that allows on-demand viewing and simply uses broadband fiber as the carrier instead of 75 ohm coax.
The fiber lends itself well to delayed viewing, but the coax is designed for real time.
http://www.reuters.com/article/2011/06/14/us-google-idUSTRE75D5C920110614
Google hones search for mobile and speed
http://www.bloomberg.com/news/2011-06-14/comcast-to-start-testing-remote-storage-video-recording-service.html
Comcast to Start Testing Remote-Storage Video Recording Service
http://www.videonuze.com/blogs/?2011-06-14/New-Research-Shows-Netflix-Is-A-Catalyst-for-Cord-Cutting-and-Cord-Shaving/&id=3101
New Research Shows Netflix Is A Catalyst for Cord-Cutting and Cord-Shaving
http://news.cnet.com/8301-30686_3-20071138-266/cable-fights-to-stay-relevant-in-online-world/
Cable fights to stay relevant in online world