I feel alfine (mushy, inefficient, wears out in not much longer than a chain drivetrain) as the only igh option (and explicitly making choices that prevent a rohloff being used) and no belt drive is a deal breaker for anyone with the kind of money to blow that is seeking something as convenient and premium as possible.

A bike that is always clean, never needs you to mess around finding a secure lockup and almost never needs service is the dream, and stopping 90% of the way there for want of 3kg seems so strange.