Do you think monopolies like PG&E in California are well-regulated? If not, could you tell me why this isn't due to systemic difficulties in setting up a well-r

Do you think monopolies like PG&E in California are well-regulated? If not, could you tell me why this isn't due to systemic difficulties in setting up a well-regulated monopoly? EDIT: I should put my thesis in here: It is easy for regulatory capture to happen in the case of monopoly and regulator. I would also expect the monopoly plus regulator to perform more poorly than either a competitive company or a public entity.