If you hold a BTC balance on exchanges (banks) like Binance, Coinbase, etc, the BTC are (hopefully) sitting in an address that is not moving, and won't for a very long time.

You can withdraw at any time (hopefully) but that comes from a working wallet, not from the BTC received by the bank/exchange years ago when you had depositted.

Same for the other type of bank (custodial wallets).