Ah, but a Lunar or Martian colony provides the perfect opportunity for a billionaire to set up his pet dystopia in a place where everyone is dependent upon him for the essentials of life and can't leave.
You're absolutely right, everyone living there would be living in what's essentially a really terrible company town. One where your boss has direct control over your oxygen supply.
I'm really not sure why anyone thinks space colonies are a good idea
Space colonies are the worst idea possible until they’re not. And that on a very large timescale, having that humans survive that long. For now it’s absolutely pointless to think we could pull it off. It’s still a good subject to explore in the Scifi genre
I'm really not sure why anyone thinks space colonies are a good idea