Australia and New Zealand have been charging per-gigabyte for years, if not ever since broadband was affordable to the average household. There is nothing new on this. For these 2 countries it was more of economics than net neutrality. NZ has only one internet cable to the rest of the world, and the effects were well felt in 2006 when Auckland lost power for 18 hours, and the rest of NZ was left with minimal internet access.

I could go on about how it just takes a flick of a switch to increase bandwidth, but in a nutshell, there are too many external forces, political, economics, that influence bandwidth. I'm not saying the internet is going to collapse any time soon, but there is a shortage of bandwidth in specific parts of the world.