They don't have to put all those trinkets on their bikes.
They have to install ABS for the European market, and they have to comply with Euro 4 emission (including noise) regulations for the European market (takes effect in 2017), and the same is true for everywhere else in the world that uses the UN-ECE standards. Traction control etc haven't been seen yet in the small-displacement market (and isn't really needed) but if you have the ABS hardware (legally required in EU) and you have a drive-by-wire throttle (pretty much necessary for Euro 4 compliance) then traction control is only software and a couple of inexpensive sensors away ...