[teh64]

As I understand it, because the Cryptocurrencies are not legal tender:

"Cryptocurrency is not legal tender and is not backed by the government. Cryptocurrency, (including but not limited to tokens such as bitcoin, litecoin and ethereum, and stablecoins such as USDC), is not subject to Federal Deposit Insurance Corporation (“FDIC”) or Securities Investor Protection Corporation protections." [https://help.coinbase.com/en/coinbase/other-topics/legal-pol...]

So any Bitcoin etc... you hold in your wallet at Coinbase could just be sold off to pay for debt if a bankruptcy occurs (which doesn't happen if a FDIC bank goes bankrupt).