Possibly, but in a crisis situation it is quite a bit more important to deliver adequate service to the "need" group. Outside of a crisis, the "need" group can pursue less expensive alternatives at their leisure. Right now, "fast" is critical.
And outside of a crisis situation demand patterns change much more gradually - long enough for manufacturers to ramp up production, more competitors to emerge etc. The normal feedback loops that make core goods available to the masses don't have time to happen right now.
Precisely. It seems like most manufacturing & supply chains have some elasticity for increased demand, e.g., toilet paper manufacturers were able to increase production either 10% or 20% very quickly (I forget which), but after going all out with 24 hour shifts, you can't do much more in the short term. Also, the more companies that have to do this, the more likely there will be correlated supply chains that feed those companies their raw materials, meaning the issue contaminates the supply & logistics process one more link up the chain.