I'm really not sure, that's Pai's argument. It seems to be a mixed bag [1][2]. Some ISPs don't mind the regulatory burden, and some don't really notice it. Bigger ISPs (like Verizon) also claim that this regulation hurts innovation, and corroborate that with a downtick in broadband investments in 2015 when the rules passed, but for all we know that could have been orchestrated.

[1]: https://www.engadget.com/2017/12/13/net-neutrality-small-isp...

[2]: https://www.fastcompany.com/40499904/small-isp-disputes-fcc-...