That may be true, but many other countries are weathering the storm of falling oil prices just fine. Venezuela simply doesn't have enough of a free or business friendly economy to allow them to diversify enough. If Maduro came out today and said "all price controls are off, all taxes are cut in half, all business regulations are on hold for 1 year", things would rebound very quickly. It would take awhile to generate food but once that trains starts, to the extent that the government and crime don't interfere with it their people will have no problem finding food.