Costco is a union company that's like a walk-in version of Amazon warehouse invented before Amazon. They pay workers well, give them bonuses, and so on. Company makes around $100 billion a year.
If trying to imagine unionized Amazon, walk into a Costco noting how the workers perform and at what stress levels. Better yet, if about vote with your wallet, just buy stuff from Costco and similar companies instead of Amazon to maintain and create more great jobs.
My company is a union company, too. We outperform the competition. They try to poach us all the time, too. The contract allows management to take action against lazy or disobedient employees if they can prove it. Their continued employment is totally due to terrible, ineffective management. All they gotta do is write their name on a piece of paper they present to those workers several times to fire them. Instead, they write up good, compliant workers over technicalities but ignore bad workers that argue back more. The lazy, weak managers get stuff done on paper that way. Although very common in union shops, I virtually never see anyone talk about the management angle on bad employees hard to get rid of.
The other issue is managers backing friends/family, who they buy drugs from, sleep with, and so on. Lots of political backchanneling over the most ridiculous stuff in these big companies. The sales teams are even crazier most of the time but theyre professional bullshitters with incentives to be aggressively outgoing. So, no surprise Im always hearing crazy stories about ex-employees. ;)