Fair enough on the point about zero rating and net neutrality. However, I have a hard time thinking of a scheme where allowing zero rating does not discriminat

Fair enough on the point about zero rating and net neutrality. However, I have a hard time thinking of a scheme where allowing zero rating does not discriminate. To not put too fine a point on it, what makes Wikipedia so special that only they should get zero rated? There are lots of other useful and educational sites out there that should also be zero rated by any criteria that Wikipedia meets. Sure, you can try to minimize the discrimination, but you can never remove it totally. Zero rating is by definition discriminatory. There is allowed content and here is banned content and the ISP as the gatekeeper gets to decide which is which.