Yes they can and they did. What they also did was lose any ability to market themselves as individuals. Those that have better skills or work harder are at the mercy of what the union negotiates for the whole.
Well done on exercising your right to unionize and therefore be compensated not on the basis of your own personal strengths and unique values but as a herd of cattle.
Personally, given the choice, I have and will always market myself.
There are 2 types of people… those that value liberty more than security and those that value security more than liberty. Obviously, everyone wants some of both, but while everyone says they love freedom, the truth of the matter is, they really don’t. Many fear it, because that means making decisions for themselves and being responsible for their own actions.
Those that value security would gladly give up their freedoms in exchange for security which is why ruthless dictators like Mao, Stalin, Pol Pot, Castro, etc. have been able to strip entire nation of peoples of their freedoms in the name of equity, social justice, etc… all the unicorns that represent eternal safety which have never been observed in nature. But despite the atrocities that have been committed in the name of those ideals, those phantom ideals continue to seduce so many people because they innately prize security above all else.