The child abuse and fear mongering are things that they’re proud of and believe are justified. Trying to address it just makes them feel more powerful.
Calling them “weird” works because their whole ideology is based on them being the normal ones. If you take that away, you also take away their entire (false) claim to authority.
They’re not talking about natural monopolies. A natural monopoly is when there’s some barrier to entry that prevents competitors from entering the market, like a need for prohibitively expensive infrastructure.
What OP is talking about are situations like Walmart opening a store in a new location, operating it at or near a loss to drive the local competition out of business, and then jacking up prices once no competitors remain. The government isn’t forcing them to do that.