Earlier quoted context omitted.
Money is not an issue here. Current resources is.
Doesn't it take money to increase the supply of a good? A manufacturer making bank on a product is going to reinvest that into his supply chain, increasing the overall supply... a good thing for everyone, which eventually, depresses prices and makes said goods commodity and affordable for everyone.
Say you got a million (or 10 million) people to pay extra (it'd be lot of people at that point); the manufacturing demand wouldn't go up any, and they would probably just delay delivery of some other doses for a week (or a month).