[goatherders]

The TV providers will never allow this, not that I can tell. A restaurant or bar with more than one or two TVs is on the radar of their TV Provider as a commercial account. If it becomes clear that the advertising they put in is being removed in favor of in-house ads, they're going to jack the price of the cable package WAY up.

[btown]

Or put in a contractual term specifically to disallow automated ways of changing the channel.