Yes. For example, Apple has complete control over their App Store. It's essentially a small economy in which they are the government, and it's a market they regulate with an iron fist. Because OUR regulators won't.

But they're dictators. There's no democracy, there's no voting, and Apple does whatever it feels is best for them. Just like a dictator would run their country.

There's plenty of mutually beneficial arrangements that Apple unilaterally struck down because they want to maintain their stranglehold on the market.