Community-scale banks (aka credit unions) are a better idea for local-regional communities (aka cities and towns and agricultural regions) because their managers have to live with their clients. Take a community of 100,000 families, in an economic system where they're all collecting income and paying bills and so on. The idea behind a bank is that they hold the community's money securely while making their own money…
This doesn’t work. The very failures we are seeing today are why this doesn’t work. Why would someone leave their money in the regional bank offering 0.3% that all of their issued loans average barely above when people can take it to a bank offering 3% or get CDs offering that? Community scale banks aren’t a solution for this.
https://online.citi.com/US/ag/current-interest-rates/cd
https://www.bankofamerica.com/deposits/bank-cds/cd-accounts/
https://www.chase.com/personal/savings/bank-cd
I double checked, and it turns out they all have a couple of products offering closer to 4.5% APY, but the tables on those linked pages still have far too many numbers like 0.05% APY on them to be taken seriously.