[hellogoodbyeeee]

You want utility companies to be a regulated monopoly because of their economies of scale. Consumers would be worse off with two small electric companies because their per unit of electrical price would be higher. Competition can't price away the fixed costs of building a power plant or stringing electrical wires all over town. However the monopoly has pricing power and needs the government regulation to prevent it from unfairly raising prices for consumers like they would to maximize profit without the regulation.

Natural monopolies are bad because they can use their market position to unfairly prevent new entrants to the market. For example, Amazon may buy all of a key supplier's product and prevent the upstart from even having a chance because they can't buy any of that product. The monopoly can raise prices to whatever level they want, despite what the market would dictate because the consumer doesn't have another alternative.