What you are describing is not "net neutrality", but usage based billing. There is no problem with that on
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What /.ers are talking about when they refer to net neutrality is the neutral treatment of data based on the content of the data, NOT the manner in which the content is transmitted. That is a very important technical distinction to make that is commonly misapplied when the term "net neutrality" is used without understanding the underlying issue.
Your electricity bill is "electric neutral" already. If BC Hydro were to overturn "electric neutral" they would bill you differently not only the quantity of electricity you used, but for the purpose to which you put the electricity. They could do things like bill you more for powering a non-BC Hydro branded/partner TV or fridge, but they would sell it to you as a "discount" for using their services. If you complained, they would say oh just switch to a competing provider!
Except the only other "competition" colludes with them in price.