I don't think unionization will do much good. American-style unions are more like the mafia than a "real union". Unions in places like Scandinavia is the only way to fix this in my opinion but doubtful that will ever happen.
The US's relationship with unions is pretty crazy.
*Excuse me, this was a typo, I had intended to write "countries" sorry for the confusion.
It afforded workers the right to form independent governing bodies and self-finance things like strike relief funds that are important in cases where a company is simply unwilling to bend in any way. However, my experience there is an enormous, unserved middle ground between "no collective representation at all" and "we need a separate warchest and leadership to force any sort of compromise" yet creating something in that space is effectively illegal thanks to existing law.