The article cites the rapid changes to supply chains, particularly Walmart's, as a reason the economy kept going. What else is that, other than the mechanisms of a free market at work? The government didn't tell them how to run their supply chains. Nor did the government tell companies how to shift their workforces to remote work, they just did it, and they did it pretty well, even though some of them had never tried…
There are many businesses still teetering on the edge who have not transitioned well. There are many businesses who laid many workers off.
Also there were major failures in how quickly PPE production could get ramped up, I wouldn't call that a supply chain/market success.
There was some corporate autonomy going on, but I wouldn't say we saw a miracle of the "free market" at work.