In the second half of the twentieth century, pro-union and anti-trade policies led to a Rust Belt that became uncompetitive, costly, and unable to cope with reality. More protectionism won't save the region now.
Workers get paid now, but the capitalists only get paid if there is a profit. This is why workers aren't paid 100 percent of the value of their output. For them, there is far less risk than for the capitalist.