The Other Reason the TV Guys Are Moving to the Web

[Commentary] One by one, big networks are stepping out of the cable bundle and giving viewers a chance to watch their stuff on the Web. But those networks also assume they’re going to make most of their money from the cable bundle for many years to come. Which, it turns out, is one of the reasons they’re going to the Web. Sounds confusing, but it’s pretty straightforward: Adding an “over the top” service -- one that uses a Web connection instead of a cable box -- gives TV networks more buyers, which gives them more leverage. And they’ll try to use that leverage to get concessions from pay TV distributors, so the networks can improve their existing businesses, even as they build out new ones.