Bankruptcies happen for the exact same reason. It's only a matter when the assets are liquidated.
In broad strokes, these assets act exactly the same. This boils down to economic rationality. It doesn't matter if you invested in fine art or real estate. When the economy crashes and your business fails or you lose your job, you may need to liquidate assets to pay your mortgage or rent, bills, etc. This is the part of the underlying drive towards cash during liquidity crises.
This idea that people who invest in stocks or real estate need cash, but people who invest in low-cap or niche markets don'tdoesn't really pan out for me.
In a sense, you are right, but still, I believe that the bitcoin market is very far from a rational market due to low capitalization, the presence of large players (whales), etc. Obviously, this is far from a "theoretical" rational market where we must always see the effective / fair price of an asset.
So...