Yeah, I reworded my original post. My point is that any agreement for the future sale of shares not currently owned by either party is a corrupt practise, and should not be a legal contract (by very definition). It's like two guys arguing on your lawn about who gets to sell your house after they run over your dog.
The bottom line is that no Contract can guarantee those shares can be bought at ANY price before they sell that share. Margin requirements
are not a sufficient guarantee as we saw in Jan 2021 with $GME, when there was >140% of the outstanding shares committed via Put options (which cause a $2.8 collapse of a hedge fund): it is a massive house of cards.
Melvin Capital is down 30% this year as day traders have bid up stocks including GameStop and Bed Bath & Beyond.
markets.businessinsider.com
TL;dr Did you play "musical chairs" when you were a kid? Remember what happens when the music stops? Littlest kid gets bounced. Hard.