Picture this: The "Google Search" package with Comcast is $8/month. Or, you can get "Comcast Search" for free! Comcast search is shitty and conveniently doesn't "find" results that conflict with Comcast's business or political interests. But hey! The free market and invisible hand will sort everything out! /s
If anything, this FCC change will cement Google's dominance. They'll pay some rent to ISPs to maintain their priority lane, something an incumbent won't be able to do.