How Narrow Can Bike Chains Get? Campagnolo Thinks They Know

Yeesh. What's beyond farce?  At some point, the chains, cogs, and chainrings will get so fucking narrow that you'll need some hyper-expensive materials so you can get even 2000 kms out of them.  Welcome to the brave new world of thousand dollar cassettes and chains.  Brilliant!  Plus the components are all hideously clunky.