I don't know about that. Do you remember the campaigns against roadside littering and the use of seat belts and child seats. Sure there are sanctions, but I believe it was conscience and constant reminders that created the changes in behavior. (I know that these days littering has returned, but is it because of punishment,the lack of enforcement or just because there are no more ads?)  

I can swear there ain't no heaven but I pray there ain't no hell. _ Blood Sweat & Tears