I've mentioned this in a few threads over the past couple weeks but I think it's worth drawing attention to it directly.
A lot of the problems with corporate greed in the US can be directly traced to Dodge v Ford Motor Co.
A business corporation is organized and carried on primarily for the profit of the stockholders. The powers of the directors are to be employed for that end. The discretion of directors is to be exercised in the choice of means to attain that end, and does not extend to a change in the end itself, to the reduction of profits, or to the non-distribution of profits among stockholders in order to devote them to other purposes…
It is literally illegal for corporate officers, directors, etc. to act in ways that reduce profits for shareholders. Anything done for social good, improving the lives of workers and customers, or otherwise passing on opportunities for profit has the potential to get them sued.
I fear no amount of striking, unionizing, etc. will have a lasting effect until this decision is overturned.