IME Costco at least is not price competitive with typical grocery store private labels brands. Better quality? Sure, maybe, but they really don't compete at the "bagged discount cereal" price level AFAICT. In general Costco is usually 60% - 100% more expensive than my local HEB's HCF products.
Maybe our Warehouse Stores are run very differently? Not sure. Been awhile since I've gone to Sam's, maybe they compete in that price range.
And I just checked Chase, they charge $12 / month* for basic checking. (*Waived with just $500/month direct deposit, but let's ignore that.) If you're cashing more than $400/month, you should just sign up for it. ($400/month is deep, deep poverty level, like panhandling.) I'm sure there's people who don't get a real checking account and could benefit from it, but the reasons are probably more along thines of "ineligible to get a bank account" or math illiterate, not "too poor for the minimum balance requirements".
The whole idea is just ridiculous. The main consumer good people get screwed over like this is housing, but that's 60% screwing over the other 40%, not the top 1% vs the 99%, so most people don't see themselves in those terms.