Disney and Fox teamed up because all of the other majors (Sony, Universal, Paramount, MGM, and others) went in with the MovieFly project and Disney doesnt want to cut the pie into that many slices. Disney was rushed into its announcement to avoid embarrassing questions from Wall Street. And no, animated films are NOT included on the service.
As for the technology thats not the issue. The recording industry was started using wax cylinders on a hand crank. The sound quality from Edisons machine makes todays streaming video seem like IMAX. As with any bootstrap industry, the technology has to be just good enough to start to develop the market. That market will finance the development of better technology, which will increase the market, forcing improvements in technology, and so on. Unlike most of the e-revolution hoopla (which was basically technology in search of a market), the concept of home-distribution video is driving the process.
The only question left is if anyones willing to pay $1.95 to watch this weeks episode of Who Wants to be a Millionaire?