If ISPs could do anything to the Internet content their subscribers requested, including block it, zero-rate it, or modify it, how many ISPs would a competitive landscape need in order to guarantee there is at least one that performs no blocking at all?
I doubt poles could physically handle the number of lines to ISPs that are needed to guarantee this.
Probably not very many--few ISPs would throttle if their customers could easily switch to the single ISP who doesn't throttle. We also don't need to approach this as a theoretical problem: much of the world has ISP competition and they don't seem to have these problems. Further still, throttling Netflix is just one of many problems that derive from lack of ISP competition. High prices for generally shitty service is at least as big of a problem, and NN can't to do much to help there.
I'm not opposed to net neutrality, I just care more about fixing the anti-competitive stuff. If we can do both, all the better.
I doubt poles could physically handle the number of lines to ISPs that are needed to guarantee this.