Because unlike in an ATM withdrawal where you take money out from your bank, you just paid the merchant a bunch of money, and the merchant is giving some of that payment back to you as cash.
Right - but there is a difference between the "Withdrawal limit" and the "Account Balance" - Just because you have a $50mm withdrawal limit, doesn't mean you have a $50mm account balance.
It's not obvious that you need to verify your identity to withdraw. It would be very easy for someone to see a deposit address and assume withdrawals would be just as friction-less.
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