I will try to make this as factual and non-tendentious as possible.
Once upon the time, there were no corporations. There were businesses, but mostly small. And farms. Workers made enough for food, clothing, and shelter. And probably little else. No car, TV, or computer. Then corporations formed. They had total control over their workers and the workers had little power over the corporations. Then workers had the idea of organizing. Needless to say the corporations fought back. By getting laws passed and hiring goons. In the 1930s, Roosevelt tried to stabilize things and the Wagner labor act was passed.
There were three kinds of shops: open shops, closed shops, and union shops. In the first, union membership was voluntary and the unions were weak. In closed shops, you had to belong to the union in order to be employed. This can be, and often was, abused. In Philadelphia in 1960, the constructions unions acted (illegally, as you will see) as a closed shop and prevented blacks from memberships. Even the builders wanted to hire some token blacks to buy peace, but the union resisted. Eventually, some settlement was reached and a few black tokens got construction jobs. The union shop arrangement allowed a worker to be hired and then join the union and the union could not refuse them.
The Wagner act legalized all three arrangements and the unions, I believe, had the power to enforce whichever type of shop they wanted. The midterm election of 1946 elected a strongly Republican House and the Senate was in the hands of the Republicans + Dixiecrats. They passed the Taft-Hartley labor act which did two important things (and many other things). It outlawed the closed shop and they allowed individual states to outlaw the union shop.
Southern states did the latter and used it as a lure to move a lot of manufacturing to the south and has resulted, over the years, in the near destruction of the unions and the current situation in which there are not enough jobs that pay a living wage.
Quebec allows closed shop and when a Walmart unionized, they promptly closed it. Of course they denied that the union was the reason. Take that for what it is worth. One thing I don’t understand is why no Walmart is unionized even in states that allow union shops.
Over the years the corporations have grown bigger and more powerful, while workers have grown weaker.
If I were dictator, I would consider abolishing corporate taxes (which get paid by the consumer anyway), but taxing all income, earned and unearned, at steeply graduated rates. But capital gains would be taxed only net of inflation (as happens, I believe, in Britain). But then I think supply-side economics is nonsense.
As for economics, I am a Josephian (the biblical Joseph). Have budget surpluses during the fat years (e.g., the late Clinton years) and deficits during the lean.