If they had infinite money they could do this. But shorting a stock is usually done on margin and if you lose enough money on a short position you’ll get a marg

If they had infinite money they could do this. But shorting a stock is usually done on margin and if you lose enough money on a short position you’ll get a margin call asking you to deposit more money with your broker. If you don’t do that they’ll buy to cover your position for you.