The economy is too big to centrally plan what depends on what. We've stopped producing tools and supplies for essential jobs (and parts for those tools, and so on). Instead we're drawing down stockpiles that hadn't been sold yet. When those stalled pipelines fully drain it's going to get ugly.

You don't have to central plan, and our food production and manufacturing have not stopped... we aren't drawing down stockpiles, the critical things are still being made.

What we have stopped are things like restaurants and entertainment... there aren't stockpiles involved with those things, we just aren't going out to eat and aren't going out for entertainment. They can start right back up when we end quarantine.

The government does not have an exhaustive supply chain diagram of every essential business. Emergency orders have exempted certain obvious types of business, but their feedstocks and tools come from other businesses that weren't listed and cannot operate today.