In hindsight, I agree it would have improved today's situation if we had shut down all non-essential buying of masks, etc., the minute it became a pandemic. Although, defining "non-essential" would have likely turned into an interesting political debate! For example, would exporting PPEs to countries in need be essential or non-essential? Etc.
Where I do disagree is that PPEs are the #1 issue. My opinion (for whatever that is worth other than just being a discussion point), is that officials not declaring and citizens not taking seriously isolation orders is the #1 culprit.
But time has passed and we can't turn the clock back. The important thing now is determining the best course of action from here.