I wish the Surgeon General had studied economics. The Law of Supply and Demand — the most fundamental principle of economics — tells us that shortages cannot exist when prices are allowed to adjust to changes in supply and demand. Or, to put it another way, shortages *only* arise when the price mechanism is impeded, whether by law or by custom.
In the United States, and around the world, both law and custom prevent market prices from adjusting when such adjustment is most urgently needed: when there is a supply disruption and/or a spike in demand for that product. That is happening right now, when it comes to “N95” masks, the type that filter out 95% of particles and are deemed most effective in preventing the spread of coronavirus.
I actually bought a box of 10 of these masks last year for a trip to Mumbai, India, where I used them — quite successfully — to protect me from the highly polluted air in that city. It cost about $15. Yet today at all of the drug and hardware stores around town that used to sell these masks, I see signs on their front doors that say, “No masks available.”
Demand has spiked for these masks. Whether this spike in demand is based on sound medical opinion or not, it is a fact. If prices were allowed to adjust, they would rise. This would have two effects. First, it would reduce the quantity purchased. Those who were not willing to pay the higher price for the masks would not get them, while those who urgently needed the masks — and could pay for them (think: hospitals!) — would find them readily available.