Prabhupada's Lectures Bhagavad-gita 1974
So this Vedic civilization was that keep some land and keep some cows. Then your whole economic question is solved.
That is Vedic economic system. Gavayah dhanavan. Gavayah means by possessing some number of cows one is supposed to be rich. It is actually the fact. Everyone should possess some land for growing food grains and some cows to take milk. Then the whole economic problem is solved.