If a corporation is greedy then the people within it are greedy.
There are options available for workers to assert influence. They’ve done it to spectacular effect throughout history.
Not in a surveillance state. It's easy for a company/government to identify unrest and deal with the perpetrators, before anything breaks out. These institutions have the power to ruin your life for showing any signs of protest.
That is reductive. People have their own responsibilities and are dependent on income. This is the vast majority of workers.
They do have agency but usually larger action is done if circumstances reach certain thresholds.