You need to update you preconceptions. Unions only represent 10% of manufacturing workers now.
And where are those jobs concentrated. In what little manufacturing sector we have left. We would have a lot more jobs if unions hadn’t killed the steel industry among others. However, even if Unions die off all together, I still have no interest in paying 45% more for goods and services to benefit some factory worker in a state I don’t live in. It is in my family’s best interest to allow competition drive down the price of consumer goods as much as is possible.