Like it did for the financial and housing markets...
For our mixed economy to work, there need to be rules and at least basic public knowledge. Consumers and investors could see the growth of housing prices. Very few could see the true scope of the derivatives market. If the ISPs discriminate traffic, we may see it, but if it's hard to tell and LEGAL, they won't stop.
It would be akin to deducting a 10% fee out of someone's direct deposit compensation, if it's not from a "preferred" employer like Wal-Mart, Verizon, etc.