They were the OWNERS. Control goes with ownership - or it used to.
I suppose these unions think that they can put owners up against the wall and they'll buckle. Sometimes, maybe they do, but sometimes they say "screw you" and take the jobs to Mexico or even Ohio, where the remaining population well remember what union intransigence can do to the employment base of a community.
It was a shot across the bow to the union... shape up or this stuff is going elsewhere and nobody will know the difference.
He's right that it's about control and it shouldn't be the union controlling a private business. The owners are within their rights to do as they please.
He nailed it but doesn't see that he's doing the very thing that he's damning the company for.