How? By striking? Nobody wins in a strike!
Growing up, my Dad was a union worker for General Electric. When I was about 10 months old, his union decided to call a strike. He was off work for 3 months and could not support my mother and me. He had to move us back to the family farm and work the land until he could go back to work.
When I was ten years old, I fell and broke my arm. That night the union went on strike for 4 months. All of my doctors' bills were paid out of pocket because back then when you went out on strike, you lost your medical coverage. I think they were out from November to January in that strike. Every time they would go on strike for months, they would usually settle for a few dimes an hour's wage increase, which was a net loss of the thousands of dollars they lost during the strike! It made no sense. The company probably actually saved money and got rid of back inventory at the same time.
If unions are so good, why is it when I graduated from college, I made more my first year in the poorly paying Navy than my father had done in any of his 26 years with GE?
Right before he retired, he was working 10-hour days, six days a week as the only person in the whole factory that painted certain components of washers and dryers that could not be painted by robots. If he was sick, that particular line did not run. Fortunately, my father was an ox and handled the load with no problem. Working all of that overtime was the only time he ever got close to my Navy pay.