Strange because Time Warner already tried implementing metered cable usage in a couple cities. Didn't work out to well as I recall.
The problem isn’t metering, it’s choosing ridiculous rates and limits. You’d howl too if your electric company decided it wanted to charge you $10/kwh. That’s the sort of nonsense the cable companies tried to pull. Charge a penny per gigabyte (and halve that rate each year going forward to reflect technology improvements) and few would complain.