I wonder why US companies keep pulling stunts like this despite the data showing little negative impact of unionization to overall productivity nor company survival. It looks to be a purely dogmatic ego trip where somehow blind loyalty is demanded even when it's not actually necessary.
I personally believe companies are given way too much credit in being considered rational pure-profit motive actors. They're far worse than that (a rational pure-profit motive actor is also bad because it would inevitably select for slavery): they're typically run by extremely conservative, often ivy-league people (if not in alma mater, then in worship of ivy league culture). These people are trained from the get go…
https://en.wikipedia.org/wiki/Professional%E2%80%93manageria...
It is a bit of an overused catch-all term though, but explains what you are describing.