Then you went too far. For many users the 40G port is there to increase 10G density, by offering 4x10GE breakout. It is already difficult to support 1GE customers and 10GE is starting to become problematic. But SP networks actually have these customers, and not every application on the Internet will always need more and more capacity, so many of these customers have no requirement to ever purchase faster ports.
If you live in cloudyworld, sure, denser and faster. But this mode of thinking is making life at SP networks rather difficult.