A friend of mine, a general aviation pilot, showed me her copy of FAR 101. She pointed out that if she had an accident, there is some regulation in there that would be used to justify the ruling that she is at fault. She also pointed out that every regulation is traceable to accidents. Many rules we have, especially in pharmaceuticals, food, vehicle design, roadway design, bridge engineering, etc., are all because something failed, people died, or someone cheated and stole money from people.
Any time a CEO, billionaire, or business celebrity speaks out against regulations, I ask the question, how do they want to cheat? Why do they fight back against regulations that keep them from cheating?
Now, answering your question more directly, all of the things you've listed are very close to or are monopolies. In education, Harvard has a monopoly. There is nothing that offers the same reputation. As soon as somebody says, "It's as good as Harvard," you've just been told that the speaker knows a Harvard education is a top-notch and desirable commodity only available from Harvard.
in energy, the power lines are a natural monopoly. You will not have 20 competitive power companies going to the expense of laying our ten kVA lines within a city or across the countryside. Given that powerlines (and phone lines and fiber) are natural monopolies, regulation is needed to prevent consumer harm and keep the cable owner from competitive access to the infrastructure.
energy is also regulated to ensure that all the power companies interoperate and can't use their market position to create monopolies. We wouldn't have the wind and solar production we do today without a power company monopoly on the generating side.
healthcare is an interesting case. Medical services are a market if you assume medical service providers are fungible. One primary care doctor in a white coat is the same as another. But they're not. They have different prices, success rates, and availability. I asked the question if you are walking down the street and have a heart attack, what you do? Call 911 and go to the nearest hospital, ask to be taken to your primary care's hospital or start a search for the medical centers that have the best outcome of cardiac events and the best cardiologists. If you choose the first one, you are acknowledging that the medical market can be a market and is price insensitive, second is that it's a non-competitive market, and third, you are clearly treating it as a competitive market but you run a high risk of being dead or severely crippled..