Star Trek, or any post-scarcity economic model depends on a generally conservative populace. And by "conservative" I mean as in "conservation", not right-leaning. Peoples' ability to waste is probably limitless, so you need people who reflexively don't waste. When you walk out the door of an air-conditioned (or heated) room into the hot (or cold) outside, you shut the door to conserve energy. You don't leave the door open and say, "It don't cost me nuthin,"
Sensible, but too often as a people, we aren't. It's also a different definition of "conservative" than matches current usage. Too often these days in the US, "conservative" goes along with a right, almost an obligation, to waste resources, both natural and human.