What seems to be happening for millenials I know is the addiction to money and treats. I hear a variation of "I hate my job, capitalism is terrible obviously but I've never made this much money before." They support radicalism and 'burning down the system' in the abstract but fear or attachment keeps them from actively resisting the structure.

But like you said I know plenty that foregoe those pleasures or use their job to attack the system of all ages, that gives me some optimism. Not everyone needs to take serious action, I don't really blame any individual for being scared or unsure.