Do you think that trying could have considerable costs? Russia tried communism, that... didn't turn out well.

It could, incremental changes, or doing it on a smaller case would mitigate the costs. A "partial" basic income already exist in several European countries, where even when not contributing to society you are given enough to subsist. The results are not too bad so far.

Why new? That's precisely how the current equilibrium works (where advantages == money).

You are right, it would just be different jobs having the most value

Why capitalistic? In your black-and-white picture that would be true for all human societies except for socialist ones. Under capitalism you could at least live off your capital if/when you have some.

Is any system where people are automatically given subsistence socialist? Because it is the only thing I have talked about.

You didn't answer the question.

Money, but with a cost for not being a producer smaller than today (aka no comfort rather than no subsistence)

So why would anyone come to unclog your toilet?

For money, same as today