I think motorcycles will eventually be like it is for cars. Most drivers do not know what to do in a panic situation, slam on the brakes and fail to corner properly. ABS braking, electronic stability control and airbags will soon be required for all cars built, and if you want the cheaper version with less safety equipment you have to buy used or a kit car.
Companies want their customers to live a longer life, so they can buy a new vehicle later.
Like airbags for cars, the future ABS and traction control systems will be better, with less for well trained drivers to complain about, and mass production instead of a rare option will greatly lower the extra cost.
This part of the history of car seat belts was interesting to me:
"In 1958, Saab decided to install seat belts for the first time for the front seat of their popular GT 750.
When the state of Victoria in Australia passed a seat belt law in 1970, in America it was likely that 9 out of 10 people probably didn't fasten their seat belts. Maybe it was more apt to happen when going out on the U.S.'s recently built interstates.
Other countries in Europe managed to pass mandatory seat belt-wearing laws, after Australia proved through annual statistics that wearing seat belts there was saving lives.
Oddly, Australia's direct link of the U.K. couldn't seem to pass a seat belt-wearing law until 1983.
Seat belt-wearing laws started popping up in most American states around 2000."
from The History of the Seatbelt in American Cars - Yahoo! Voices - voices.yahoo.com