In fact all people businesses rely cash. Yes we are now living in which cashless transaction exist but what is the main reason they are being accepted? It is because they have monetary value in it every time you buy something on credit your bank pays the business in cash companies will always want the living proof that their assets exist and there is no way better than to show you have a lot of Fiat currency in your bank account. We are still officially living in a world where cash is still king.