03/07/2011 08:26 am ET Updated May 25, 2011

As Telecom Industry Evolves, Success Of Netflix Is Biggest Threat

By any measure, Netflix is having a marquee year.

It has 20 million subscribers, way up from 12 million just a year ago. Its stock has tripled in that time. During periods of peak Internet use, a full fifth of all American bandwidth consumption is people watching movies on

But the more that consumers embrace the movies-at-home ethos of Netflix, the more uncomfortable major players in the entertainment industry have become.