I mean specifically for certain consumables and products. You don't need warehouses for televisions, etc.
Strategic resources, you need a safety cushion and access to reserves. That includes energy and even foodstuff e.g. grain stores.
Don't think there will be food shortages, or a famine in Europe or the UK, but the probability of black-outs over the winter seems probable. That will be the end of Boris it will also focus minds on fantasy and reality when it comes to the feasibility of certain intermittent renewables.