Earlier quoted context omitted.
Have you used a bank lately? Tried moving money and buying some stocks? Tell me how long that takes from money leaving your account to settlement.
Three days in Australia, and that's enforced by ASIC not the bank. Moving money is instant though, unless it's to a credit union which can take around 24 hours or so.
I'm also from Australia and moving money is not instant between different banks. Crypto settlement is instant.