Did you mean the real Bitcoin or Bitcoin ETFs? Bitcoin ETFs works same like stock.

But if you talk about Bitcoin, that's completely different. It's true in case Bitcoin worth $0, you can still own your coins. But if stock or ETFs went to $0, you doesn't have your share again because the stock exchange already delisted the stock.

It means you own nothing and you can't do anything, but in Bitcoin you can send your coins regardless the price is and no one can control it.