How would a highly STO-oriented society be organized in terms of politics?

[Poet]

Poet, I think you underestimate the amount of trust and intimacy that can exist even in a large and demanding society. As humanity stands today, I understand your position.

I believe capitalism is simply training wheels for a society that lacks basic faith.

No, I don't think it is a problem of trust, but a problem of knowledge. There must be some kind of mechanism which coordinates the single actions of people if a society is highly developed. It can work without it in small communities when technology is not so advanced. But when spezialization and division of labour increases, nobody can possibly know how much resources are needed and where they are needed.