but because they weren't allowed to expose themselves so much to risky investments, they didn't lose their shirts, and therefore the debit card monthly fees are not critical to their survival.
My point is the government stepped in and changed the regulation, which capped the banks ability to charge a fee. Instead of losing that revenue stream, they passed it on to the consumers directly. A bank's profitability, or investment history has nothing to do with that behavior. Any institution would do the same regardless of their financial health. If the government stops one revenue stream, they will open another typically against the consumer.