I will never take loan from the bank nor will I ever borrow money from the bank, it's like filling up their pockets, working hard to get them richer, banks are smart, I have heard a lot from a old banker in my country, he exposed a lot to me about bank internal operations, I am always surprised seeing some banks folding up, because it's way easier to make money running a bank, so much illegal money making schemes behind the close door but looks so legal.
However banks have done a really good job at involving themselves in almost any aspect of the economy, so even if governments were willing to reduce their power they have no way to do it, since most legislators are on their payroll anyway and any proposal which could undermine their privileges will never become a law.
Of course we have Bitcoin now, and it is thrice or so on... better than the banks. I guess we already know why, so I don't need to explain it again. Banks shouldn't worry though, because like you said, they still have their own importance. Something related to the economy.