At this point I’m not even sure stock market is not in the same boat. I mean, has anyone ever been unable to buy a share for a specific company just because there isn’t any left?
This won't really happen IRL, there will always be someone willing to buy/sell at a certain price point. Just an example on how the market behaves if a group of stock holders thinks that the current trading price is undervalued all of them won't be selling at that price but something higher than the current stock price in which the buyers for the stock they are holding will be matching depending on how the market opens, that is why we have something called "gap up" on trading charts this signified a jump in value from the previous closing just because the sellers and buyers have agreed to the new price. In an asset market there will always be buyers and sellers matching orders as this is how some people make profit or is in line with their trading plan.