Proof of this is the number of HKers trying to source supply from all over the world to sell locally. 2 months ago, no-one was interested, there was no money in it. Now lots of people are working to increase supply, even people with a suitcase full. Today's Watson queue(*) shows there's unsatisfied demand for 35 million masks.
(*) ...and as I said, the market works and government doesn't. 1.4 million people queued online for 30K packs of masks. Compare that to the New Year's Eve lottery IT fiasco.
Cue the run on cling film/saran wrap/plastic wrap (choose your brand of English). The "proper" way to protect your conjuctiva when protective facemasks are not available, YMMV:
In order to increase supply, more machines need to be procured and by the time that's done the need for additional masks will probably be over.
I would say mask machines are a depreciating asset so procuring additional machines and materials would just result in wastage.