From that PC World article:

“Chandra also said that he anticipated that more content providers would open up their content to Google TV and other platforms, as long as they can monetize their revenue streams. As an example, he cited Comcast’s “TV Everywhere” strategy, where content is available via multiple platforms, and subsidized via the monthly cable bill.”

I asked my secret sources about why and how those TV Network websites can block Google TV, it’s mostly because of the Flash plugin in Google TV not showing itself as “Desktop/Generic User Agent”, that Flash player specifically announces itself as being “I’m Flash on Google TV”, so even if you change the settings to be Desktop User Agent, these websites can still detect a Google TV through the Flash plugin.

I think Google, Adobe prefers to be as good friends as possible with the TV Networks and Cable companies, just in the probable case that they will all decide to allow Google TV through some sorts of monetization soon. For example, there could potentially be some kind of new payment for access. Or basically, logically, Hulu and Netflix should fully work on Google TV, as those are paid services, and as far as I know, they include a big part of the TV Networks contents in the USA.

As for getting access to “all” contents, well, Google just announced 3000 movies have been added for viewing in the USA from 3 of the 5 major Movie studios. So I think they are on their way to trying to add as much as possible.

While it may be hugely controversial, I don’t think Google will or can block BitTorrent use and perhaps also some type of unlocking of Adobe Flash plugin once the Honeycomb 3.1 update arrives on Google TV devices. So if the content owners don’t agree to make deals, my expectation is that piracy will run smoothly on Google TV and that in theory the Google TV box should be undetectable for TV Networks to block them as long as they offer video streaming on their websites.