I'm guessing it's 'cause 'Mericans like it all matchy-matchy and SRAM make better-looking levers and chainsets than Shimano.
They're also fans of abbreviation, so one double-tap lever is 'superior to' two single-tap levers.
In all seriousness though, it's because Cam-pan-yolo isn't a serious alternative to Shimano in America. With Campag (yes, Campag, not fucking 'Campy') you're talking a week's wait for your bike shop to get the right shifter cable in stock, versus SRAM-Shimano harmony and everything available right away.
The American guy who rides Campag has two other Campag-equipped bikes of equal specification to the one he just broke, basically.
I'm guessing it's 'cause 'Mericans like it all matchy-matchy and SRAM make better-looking levers and chainsets than Shimano.
They're also fans of abbreviation, so one double-tap lever is 'superior to' two single-tap levers.
In all seriousness though, it's because Cam-pan-yolo isn't a serious alternative to Shimano in America. With Campag (yes, Campag, not fucking 'Campy') you're talking a week's wait for your bike shop to get the right shifter cable in stock, versus SRAM-Shimano harmony and everything available right away.
The American guy who rides Campag has two other Campag-equipped bikes of equal specification to the one he just broke, basically.