Cryptocurrency Wallets

In existing in collateral markets that i've seen out there, like an f t f x, you kind of deposit es, say, a punk, to a pool, and then you have no guarantee that you're ging to get your punk back out. People can come in and redeem and take your punk out, and you would lose it. So instead of like buying an eftes, youare obtionately buying them. That is not far away from what caul be actually scalable, right?