We've always had data-caps that would sound insane to those of you in the Americas or Europe, and we've always dealt with them by not having net neutrality.
As an example, I remember the first time coaxial cable Internet started becoming something that was really purchasable by a large number of residential users. The speed was 10Mbps down, 1Mbps up. The data limit for the month was 10GB. Extra data was available at the low low rate of 14c/MB (or $140/GB, for those who don't want to do the math). The provider, though, maintained a large private mirror of downloads that were "free" -- they didn't count towards your monthly cap. They mirrored things like patches for games, linux ISOs, and they had a fairly large shareware repository.
I couldn't get cable Internet at home -- they never ran the cable down my street -- so I was stuck on 28k dial-up. I would have killed for cable, data restrictions or not.
But that was back then. What about now?
Now? We have companies that deliver data over LTE who do similar-but-different things. I have a cellular plan with Optus (AKA Singtel), which is $80 a month. For that, I get 20GB worth of downloads, but I also get absolutely unlimited streaming of Netflix, and unlimited streaming from most of the popular music services (Spotify, Google Play, I Heart Radio, Apple Music, and maybe others I can't remember). I stream tens of gigabytes of video and audio every month, and I can do this because of the lack of net neutrality here. Some other provides on pre-paid services which typically have tiny data caps will provide "unlimited social media access" -- because that's how they draw in teens, what I assume is the most valuable market segment for pre-paid.
I'm going to go out on a limb and assume that when a service becomes big enough that it's marketable to with free data, then one of the providers will pick up on it as a value-add. Something they can do that improves their service so they can grab more market share.
Some of you are probably going to argue that this is a symptom of a broken market, and I'm not sure that's the case. Networking in Australia is hard. We have 1/10th the population of the US in a country about the same physical size.
It's possible I'm really very wrong about how this all works. Maybe I'm naive and it's all really terrible and I should be upset. It's just hard to see from here how perfect net neutrality is an issue.