I'd say the exact opposite. If it's successful, it's competitors (the vastly powerful Telco/Cable/ISP hybrid monstrosities that significantly grew from the scattered bits of Ma Bell) will move to squash it - Making deals with sports broadcasters, simply cutting off the deals with Google, or putting pressure on Google in other ways - They're gearing up to silently disrupt Google in a variety of ways, many of them underhanded (Which is what the Net Neutrality debate is actually about - They're negotiating for rents from Google, and the question isn't if they will, but how much).
It's only if it manages to gather steam slowly that it has a chance of really disrupting the networks.
(Of course, I still really wish Google had simply starved the beast in the early tens; In 2010 or 2011, Google could simply have put less effort into copyright protection and more into original programming, and utterly rewritten the Movie and TV industries in one fell swoop)
Unfortunately it's only available in a few markets right now. I assume it'll expand if it's successful.
https://support.google.com/youtubetv/answer/7068923?hl=en&re...