I think there are some outside influences not quite in that model.
Personally my Utopia is basically Anarchy, but not like a Mad Max style. In my town, Anarchy might very well work, if we all had the same, strong moral stance and often worked with each other for common goals. However Communism would work in that instance as well. In both scenarios we would likely have to "weed" the population which would completely erode the strong moral stances we held.
Of course almost by definition Communism is essentially the lawn mower and we're the lawn. Democratic Socialists are just the height setting on the mower. A dictatorship is mostly just an individual playing farmer. They might actually good at the roll, but their feedback is not from the lawn.
Democracy is just a popularity contest completely subjective to the whims of the day. If it rains today we'll change the lawn because there will never be sun. When it's sunny we'll assume there will never be a rainy day.
A constitutional guided Representative democracy, should allow the popularity and whims expressed locally through spread out democracy and restrained by overlapping powers and transparency with certain carve outs and if based on strong moral stances, can last for a long time, though not as nimble as any other form of gov, but incredibly powerful and slow enough to have some endurance.
I think most systems work when there's a strong common goal. And during war, most turn into dictatorships.
I think most corporations have stepped away from American values and interests (lately to gather favor with the CCP) and are now essentially foreign actors (maybe they should go through a process to become "US citizens", since they are in many ways individuals, though they are almost better analogized as something from quantum physics). Of course it's complicated and therefore it's interesting and much of what the US should be discussing, but I can't when the state has taken control of education and they can't produce adults that have any useful skills and often lack sound morality and in some areas are trying to castrate children. Or when the state can't control crime, so they try to ensure I can't protect myself the way I see fit. The gov is spending incredible amounts of money and over regulating to the point the US is choking and goods are already being produced too slowly and we're over reliant on foreign nations, we armed the Taliban better than our allies, etc...