You've got the sheep and the wolf in sheep's clothing mixed up. This kind of oligopolism, rent-seeking behavior, and general corruption are some of the problem

You've got the sheep and the wolf in sheep's clothing mixed up. This kind of oligopolism, rent-seeking behavior, and general corruption are some of the problems capitalism was invented to fix. And the further societies stray away from actively defending a strong market economy, the more those problems start to come back.