I don't disagree and thats likely the opinion of the vast majority of people. Thats why i say that unions and collective bargaining are most likely to be a net benefit overall.

It just hurts competition among those who have an internal motivation to go above and beyond. They will feel they are being held back and either lose motivation or go somewhere where they feel a union isn't holding them back.

And the downside of that is companies losing their most hardworking/motivated people.

Edit: the above was written before the edit adding the cat and mouse game.

Added: I agree as well that when implemented wrong unions have pretty annoying affects on peoples motivation or work ethic. People who are qualified for things aren't allowed to do things outside of their explicit job description/contract. Etc. Some argue this is good, others argue it just wastes tons of time and hurts progress.