Rick Webb, writing for Medium:
Let’s start with the facts.
The Federation is clearly not a centrally planned economy, and therefore obviously not communist. Individual freedom of choice is very obvious. Everyone chooses their careers, and there are many mentions of this throughout the series — witness every single time someone waxes nostalgic about why they chose to enter Starfleet. Witness Bashir going on about why he wanted to be a doctor instead of a tennis player. Witness Wesley dropping out of Starfleet. Witness Vash being an archeologist and Kasidy Yates being a cargo ship captain.
Private ownership still exists — the biggest examples, to me, are Sisko’s restaurant and Chateau Picard, but many other examples abound from all the trinkets everyone owns in their quarters. Crusher’s family owns a (haunted) cottage on some old-Scottish settlement planet. The Maquis routinely refer to “our land,” which they presumably owned, and while an individual tribe may have collectively owned the land through a corporation, like the Alaska Native Land Claims Settlement Act, or through a co-op, they clearly “owned” the land, just like anyone else owned land, while the Federation was the superseding government that could give that territory away to another sovereign party, much like the ceding of the Sudetenland or Guam. Any alternative situation (the government owning the land and renting it to the settlers?) is never alluded to and in any case the words stated (“our land”) clearly indicate private ownership is still very much part of the cultural zeitgeist. Then we have JJ Abram’s Star Trek and it’s pretty unlikely that, what? The Federation owned that shack Kirk grew up in, that sweet Corvette or that roadhouse bar? Those items sure looked privately owned. Some spaceships were privately owned. Finally, let’s not forget Star Trek: Generations when Kirk says in the Nexus “This is my house. I sold it years ago.”
That was fun. If you’re a fan of Star Trek and economics, it’s worth a read!