> If you raise prices on your bottle of water at the supermarket, then people will just buy the bottle next to it - the water-maker will be paying and fee or tax increases out of their profits. If you have the only bottle of water in the desert, you can charge whatever you want. I would think that regular savings deposits, at least, are easily moved to another bank.

However, this fee is levied on all member banks of FDIC, which is basically every bank. Thus, it creates the most natural ground for collusion, i.e. everyone implicitly agrees to pass on the fees to the customers.

More than that, a bank account is probably one of the stickiest "purchases" an average individual makes in their lives, unlike a single-use water bottle. How many people do you think has the time and energy to switch to a new bank every time there is a fee increase? Is it the individual's fault for not doing so?