Universal bandwidth metering would certainly incentivize moderation. For starters, it would immediately kill the Internet advertising industry, as just about every Internet user would moderate the bandwidth they spend on ads by installing Adblock Plus.
You could look at nothing but google ads for a month and your bandwidth wouldn't be near what it'd be if you had just watched a single HD movie over netflix.
Picking the two extremes does not prove your point. A lot of people are pissed with ads right now. Imagine if they would have to pay for them too (even pennies).
