MarketWatch: HBO, Showtime and Sony are jumping into online television. But instead of putting their web traffic on the public Internet’s main thoroughfare, they want to be in a separate lane that would ensure their content gets special treatment. The companies are said to have talked to major broadband providers such as Comcast about having their web TV services treated as “managed” services. In effect, that would move them away from the congestion of the Internet, which they fear will only get worse as more people opt to stream movies and TV shows on the web.