That's not always the case though. There's plenty of industries and workplaces the world over that benefit from unions whilst still maintaining the discretion to hire who they will.
I've worked in a company with both union and non union staff and I believe the union benefited all of us without limiting the company in any meaningfully negative way.
Contrast this with shareholders and C level execs who have immense power and often world it to the detremen of the workers.
That same company was literally bought out and our office was shuttered.
Unionising allowed us to collectively bargain for better severance pay and allowed us to prioritize those of us who had additional family/visa considerations.
I've worked in a company with both union and non union staff and I believe the union benefited all of us without limiting the company in any meaningfully negative way.
Contrast this with shareholders and C level execs who have immense power and often world it to the detremen of the workers.
That same company was literally bought out and our office was shuttered.
Unionising allowed us to collectively bargain for better severance pay and allowed us to prioritize those of us who had additional family/visa considerations.