At one time, an extensive branch network was considered a bank' strength.

But the times are changing.

Branches may continue to exist, but the kinds of services offered will be different.

Speaking from my own personal banking, for example, if I need cash, I am more likely to an ATM machine.  The exception is when I need something like foreign currency when I travel.  Back in the days, if I wanted t withdraw cash, I had to line up and wait for a teller.