It sounds like a good idea on the outset, but weather this will actually increase neutral networks through carrier competition depends on 3 things:
1. Lock in: Google has done a pretty good job of fighting against handset lock in, but we will never get past the fact that we have both CDMA and GSM networks, and even the GSM networks don't have the same 3G. So you will never be able to bring your latest and greatest unlocked phone to Verizon from AT&T, for example. Couple this with the fact that most phones have to be "unlocked" even to work on another network with the same protocol and you have a real problem. Even without handset lock in, every wireless provider will require you to sign a 2 year contract, meaning you won't be able to change phone service so easily.
2. Carrier Collusion: When one provider upped the price of texting from 10 cents to 20,
every other provider followed suit. They could easily do the same thing by switching off access to Hulu at the same time.
3. Consumer Awareness: If every consumer really makes net neutrality their top priority, than they can affect change with the new competition, assuming there is no lock in and collusion between networks. The problem is, most people care more about the other things, mostly network quality and price. If you spend $75 for provider A's neutral network, but provider B blocks Hulu but gives you an alternative site provided by them, as well as free cable TV and unlimited on demand for as part of a $60 "double play" package, most people will forget their principals and go with the better value.