Henry Ford did it. I can see being a Capitalist, is not your strength.
Henry Ford did it because he was selling an extremely hot new product that everyone wanted and was making money hand over fist. He could AFFORD to do it. The same thing happened during the dot com boom. There were companies fighting over qualified IT workers. You're really not very good at this, are you?
Now, answer the question, do you want to force the business owner to double his labor costs BEFORE the efficiency gains kick in, or do the gains kick in first, which allows the owner to make enough more money to double his workers' pay? Also, since you clearly have no idea what you're talking about, how does doubling worker pay result in doubled efficiency? I know it's probably impossible for you, but be specific.