By 02/02/2020 masks were no longer available in retail channels in the US. Not on Amazon, not in your local store, not at any price.
Retailers ware not competing with hospitals for mask allocations - they we simply cut out. There was even an article on Bloomberg which I can't find right now that talked about supply channels and why your Walgreens won't be stocking masks anytime soon.
The notion that we were told a noble white lie to help protect our health professionals was invented a few months later to whitewash the incredible incompetence of our health officials/administration at the time.