The two words 'idaṁ na mama' — 'this is not mine' — are spoken at the climax of every yajña. They are not a renunciation of property; they are a recognition of debt.
The ritual gives back to fire, to water, to the ancestors, to the unseen. It is an accounting system older than capitalism and considerably more honest.
Reading the Bṛhadāraṇyaka with a botanist friend recently, I was reminded that the Vedic seers were not mystics fleeing the world. They were close observers of it.