Definitely someone can become rich without owning a business, you can just be a share holder in one this big companies, just fund your money to the company for them to use it to run there business doing this process your money is the one working for you not you working for your money you just seat back I wait for your returns.
What if the company goes bankrupt?
Because becoming a shareholder of a company is also a business because it is to be able to enjoy the benefits of the money we have used in it. Nowadays, business no longer has to be conventional because there are several new models that can be considered as businesses and they can also be quite convincing than conventional businesses that we often find on the side of the road. This means that everyone must be willing to work in order to become rich even though the methods they use are very different and they do not necessarily have to open their own company in order to do business.