It's certainly a difference, but then it's like a mutual bank that's actually mutual. Given that there are 6,940 FDIC institutions and 6,815 U.S. credit unions (according to another poster), one should choose from the commodity that is banking institutions based on the services of the bank or credit union. I bank with two credit unions that are former aerospace employee credit unions; one of them gets most of my business because they offer a savings rate of 2.1%, the other one offers 3.0% on the first $500, and 0.5% on the rest. The second one has branches (or at least something that looks and smells like a branch, but doesn't touch cash), which was helpful during the pandemic when I couldn't get in for shared branching.
I really should move my savings to a commercial bank, where I can get 3.6%, but I haven't been inspired enough yet. Sure, the commercial bank may be making a profit, but they're giving their depositors more, and that's really what I'm looking for in a banking relationship.