Joseph Sisko’s restaurant is his personal property, not his private property since it is not a money-making venture. Since money, and capitalism, do not exist in the Federation, there is no private property in any form. Furthermore, given Star Trek’s egalitarian/utopian vision of the future, no one is going to take Joseph Sisko’s restaurant – the laws of the United Earth government (which has direct jurisdiction over Earth) exist (imo) to protect people’s personal property, not take it away.
Again, perfectly fair. Before I was a communist, I rejected Marxist concepts as well. I’ve spent over two decades reading and listening to arguments for and against all sort of political, social and economic ideas. I’ve identified with centrism, liberalism, libertarianism, social democracy and other ideologies. Today, I consider myself to be a Marxist/socialist/communist not because it’s just the latest thing I’ve hit upon, but because it’s what’s made the most sense to me. When I use Marxist words and ideas, I don’t do so because I’m a Marxist; I’m a Marxist because those words and ideas have helped me to make the most sense of the world. And I’m certainly not demanding, or even asking, you do become a Marxist, I’m just asking you to consider what makes the most sense.