Is VOD a $5b market for broadcast TV ?

That's what CBS thinks, according to this article.

Mr. Poltrack based his figure on an estimate of 50 million homes with VOD access and CBS research that shows an average household would pay $100 a year to watch network programming on their own schedules.

Which means, on the positive side, that they'll be collecting a lot of money. On the negative side, to collect that much money, they'll have to divert a lot of people away from the network broadcasts, which will cause advertisers to question the money they pay for reaching viewers who aren't there anymore because they're watching on VOD.