One of the themes in the thread that I read is the one-sided, capitalism is the best, angle.

But all around me, I see examples of trade economics which are not based on the direct transfer of goods, even within the capitalistic society. It seems to me that there are pockets where different economic systems offer various advantages.

I'm curious if you agree to that statement, and could you elaborate?

By pockets, I mean anything from a household which shares all their goods, to a business that has shared office supplies, to executives and politicians making "you scratch my back; I'll scratch yours" exchanges. Any example where non capitalism trade is chosen, even though we live in a capitalistic society.

Why do you think this choice is made?
What are the perceived advantages?
Are those perceptions amiss?