Hoarding is a poor strategy in a collapsed society because hoarding invites theft. What you gain from the hoarding you lose in the having to defend yourself against those who covet the hoarded stash.
In a collapsed society it does not pay to be rich because the maintenance of that potential difference between rich and poor, which maintenance is one of the key functions of the power elite, is what is being collapsed along with the collapse of the commercial traffic the political/economy had been enabling.
Sheviit/shemitta is a periodic suspension of that potential difference coupled to the suspension of the commercial traffic.
Sheviit/shemitta induces a national simulation of kibbutz/commune life.