Go C60 or go home... I think that's the only carbon one still made in Ernesto's basement factory.

I think US riders are more enamoured of Pinarello right now. I think Bicycling magazine picked Pinarello as "bike of the year" a few years in a row, and of course they've had two Tour de France winners on their bike recently too.

There is a lot of competition for the big dollars right now, and maybe new riders don't feel the cachet of riding a Colnago when there are also $10k bikes from Specialized, Cervelo, Trek, blahblahblah all claiming to be the most advanced bank account emptiers? There may also be some dilution of the high dollar spenders with other more boutique brands available like Parlee, Cipollini, and custom builders.