Rather than empowering all, consumer and shareholder activism gives greatest voice to those with the most money in their pockets, those who can switch from seller to seller with relative ease. Consumer and shareholder activism is a form of protest that favours the middle classes, an outpouring of the dissatisfaction of the bourgeoisie.
What's great about this country is that America started the tradition where the richest consumers buy essentially the same things as the poorest. You can be watching TV and see Coca-Cola, and you can know that the President drinks Coke. Liz Taylor drinks Coke, and just think, you can drink Coke, too.