it seems that the riders that can benefit most from aero carbon frames for the most part don't have to pay for them. they may not even like them, but they probably don't have much of a choice in the matter. while thousands of dollars of carefully laid carbon may generate some sort of advantage to a world class athelete, the potential benefit is probably lost on lower category racers with the disposable income to purchase a world class setup.

personally, i would hate to be the guy with a $4000 frameset and $4000 wheels getting his ass handed to him by racers on less exotic rigs.