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.