I wonder why anyone would even think of buying shares with a local bank or saving huge part of their money with them, when they could save for a long-term with Bitcoin and make huge returns later, Bitcoin blockchain makes it very secured and the only ways an investor is at risk is saving their asset with a wallet that could easily be penetrated by hackers or fail to safeguard their private keys.
Buying the shares of a bank is different from saving and investing with the bank. I will totally recommend people buying the shares of a bank, defending how successful the bank is. It doesn't have to be one of the biggest banks in the world, as long as that bank makes a lot of profit at the end of its financial year, it might be a good idea to buy its shares if you want to diversify.