Gone are those days when if you have solution to solve problems you can easily get investors to pick it up nurture it and grow that business to become wealthy. Now you need to sow statistics on your business which means if you dont have money to start the business and get good and positive statistics on that business people will not see the need to invest in it. Its not easy to own a business now which means it is not simple to become wealthy. Everything need to fall in place for you to get wealthy. Including luck, opportunity and hard work.
So many people have good ideas, but many factors have made them not invest in them to make them beneficial to society and profitable to the developer. Some people don't want to start small. They want to have all the necessary material, financial and other resources before they start developing their ideas. You don't need to wait to get all the necessary resources before you start and nurture your idea. If you can get funding from an individual or organization, that's good. But if you don't have such support, start with what you have.