Not sound or relevant. The fact is that an unlimited router isn't necessary, but of course anyone in the ISP business can expect periodic network upgrades. What AT&T is doing is an attempt to double dip. As their bandwidth costs drop, they want to increase bandwidth costs to the end user. If you don't believe me, all you have to do is look at their financials. Uverse is Fiber to the node. And they already have caps in effect based on speed as they sell a variety of different speed packages. To get more speed, you pay more already making the data redundant and unnecessary. But Landell Hobbs former COO of Time Warner Cable says it best:
"Mr. Hobbs tried to strike a balance, saying that while the company is concerned about the cost to maintain its broadband network, investors should not be worried. He said it was “absolutely not” true that Time Warner’s profits were being squeezed by the cost of heavy broadband users. "