Under your plan, that number would rise greatly, and besides, 10% is still dangerously large. Unions are weakened, no doubt, but please don’t pretend that they are NOT extremely powerful.
Factories mean one thing: millions of uneducated people gathered in buildings, 99% of whom are convinced that they’re really worth 3 times what they are getting paid by their corrupt, rich, evil, capitalist, bosses. They are easily organized, and told how to vote, they put in union rules which allow them to sleep on the job, manufacture junk, and raise the prices of goods, all while voting democrat.
Your opinion of your fellow Americans is really low. There are millions of young people that would love a chance at a steady non union factory job. It would help national security too.