I haven't used Google TV, but I'm pretty sure your post is verifiable bullshit.

If you go to a network's site on your computer and view their content, you also view their ads. If you go to a network's site using Google TV, you view their content and their ads. Where do Google ads come into this?

No, this is all about networks being obsessed with distribution control - you can watch a show on your computer, on your HTPC, but not on a user-friendly HTPC. You can watch hulu on your laptop on your lap, but not on your tablet on your lap, etc etc.