The other good thing about 3x drivetrains is that they're compatible with 520mm handlebars, rim brakes and kickstands.
I like the method behind the SRAM drivetrains. Those crazy cassettes are incredibly light for what they are, the 10-42 is what, lighter than an xtr 11-36 with one less gear? Plus weight savings in the driver. If you're sponsored or rich then the drivetrain is perfection.
The problem is there's no way to make them cheaper. They've limited themselves to the highest of the high end. I don't think they thought about that. Now they're stuck with GX cassettes or worse that weigh half a ton and sound like an old pirate ship.