I think this is a bit extreme. What happened at Wells Fargo was definitely wrong. But it only happened to a subset of overall customers - most people were not impacted. I can guarantee you that Wells Fargo is not the only one doing this - it was probably the most widespread, but I'm sure it also happens elsewhere.
Retail banking accounts are getting increasingly "sticky" - once you have one, it is a real pain to shift it. This is why banks spend so much time, effort and money trying to attract your business. Do you really want to spend the time to shift all of your direct deposits, auto bill pays, etc.? So unless they were personally harmed, people are not going to shift their accounts. I have not recently seen the stats on new accounts opened in the year since this became public - I am guessing they are down significantly.