LOL - The US gov't did that back in the mid 1970's!
My '77 GS750's light switch was similar to the turn signal switch, it just had two positions, high & low beam. When I bought the bike, the mechanic that did the setup asked me if I wanted to be able to turn the headlight off. I said, Sure! So he unscrewed the switch housing, grabbed a small screwdriver and knocked out a piece of aluminum in the housing (scored for just this occasion at the factory) and, VIOLA! The switch had an OFF position.
It's not so simple anymore though. I think the Euro market and maybe even the JDM bikes have a light switch with an OFF position though.