Good-Person
Captain Junkie
When there's a very good business plan to work on, there's no need leaving all your money in the bank account. Banks would keep using your money for their work business. You can leave about $5 of your savings in bank for other money needs and use the rest for your business.
Banks utilise the resources of their customers. This is why you offer them the opportunity to make money when you make a deposit. Do you know why they keep pursuing rich people to open an account with them? This is because they want people to invest in bank. However, it is much better to start your own business rather than trusting a bank.