If no commercial bank is impacted by a CBDCCommercial banks will be impacted --- in a good way. Interbank transactions will take place instantly 24/7/365 at zero cost.
Consumers will be impacted too --- in a good way. They'll be able to transfer money from their bank account to merchants, friends and family instantly 24/7/365 at zero cost --- no delays, no fees, no processors, no paper forms, no middlemen --- something that never existed before --- at least not in the USA.
Basically, a CBDC will make it possible to add digital wallet functionality to all bank accounts.
Like it or not, a CBDC is coming. The financial case for it is overwhelming.