There are people who are well paid in there company,which allow them to be able to save well to gather enough money to buy assets properties without owning a business.
but buying assets and investing in business both are different, and assets have also different categories, some assets you have holding for lifetime but no passive income here, but business is a passive income source, and if you will success then you can buy another assets from your business profits, that's major advantages in business.
In my opinion, business is not a source of passive income. Business is always associated with active entrepreneurial activity and implies not only management and control, but also constant intervention in the business processes of the controlled company.
But it is precisely investment that can create sources of passive income. You are absolutely right that investments can be with periodic income payments (in the form of dividends, interest, etc.) and without income payments (the investor only expects the value of the asset itself to grow).
Strictly speaking, it is difficult to say unequivocally that one type of investment is better than another type of investment. Both can create wealth.