You should vote with your dollars, find a provider that will give you unlimited usage with higher bandwidth. I'm sure there's plenty of ISPs that would be willing to drop an OC48 (2.4Gb) into your house for a quite a few grand a month.
That's like saying if the local gas chain started charging $4 per fluid oz you have no grounds for complaint since you could have a tanker truck fill up a 10,000 gallon tank in your yard. And why do you need more than a moped anyway? Caps are not justified by the ISP's level of congestion or by the price the ISP pays for bandwidth, it's price-gouging. As long as ISPs hang their wires all over the public ways and get exclusive franchise agreements customers should not put up with being scammed.
Lawrence Radiation Laboratory keeps all its data in an old gray trunk.