Yes true, by putting all the money in the banks then it will not make any changes, banks are only suitable to meet the daily needs, if our goal is to get profit then the best solution is investment and business.
people think they can benefit from saving money in the bank, but the interest offered by the bank is very small? it will not be worth for your money and the length of time you wait, bank is not a place to get rich mate? if you want to get rich looking for profitable commodities like bitcoin, gold or real estate
The purposes of banks is not to make people who put their money on them will be rich, these interests are just a way for people to be attracted on putting their money on their banks. Why do we need to say these since this is not the purpose of the banks in the first place?
If you want to be rich, you can invest and you can also trade. In terms of Bitcoin you can save them but I think it is better if you are using them to invest so you can also have a profit and you can also move your money into something that will be adding their quantity and not only their quality.