Related: In Denmark (where I live), we have an officially designated "NemKonto" (translates to "EasyAccount"), which is where most employers, public institutions, etc. put paychecks, payouts, etc. automatically. So if you change banks, you can simply designate the new account your official NemKonto, and the money will automatically be routed there - no need to contact anyone.

This, in addition to how easy our PBS (DK version of ACH) is to use means switching banks is something that can be done easily. I know of people who will regularly contact 5-10 banks with their current mortgage details and ask for a better deal, and then go back to their current bank and tell them "match this offer or I'm switching".

We also have a simple interest on overdraft (usually 8-15% annually on any amount over draft), though excessive overdraft will get your account locked. But beyond that, no fees for hitting negative $0.05. Is there any US bank that offer a similar fee structure? I imagine people would migrate in droves if that was already the case.