This is my opinion.Banks won't make you rich.saving in bank can never do that,because of interest rate that bank gives you is too tiny.You saving will be simply be eaten up by the sleepy monster called inflation. As a example I will take ,When I'm in grade school,each day I received 10Rs (my country currency) from my mother.It was enough to by me 2 meals,but in now 10Rs enough to buy 2 candies. 
Banks are just for keep your money safe! 
It is true that no one has become rich because of putting their savings in the bank. You may be rich if you use your money for something else. Like making your own business you can earn, the more money you earn the more likely you are to get rich and learn to invest in cryptocurrency you will make a profit too. Banks are just for keep your money safe!