Lots of companies have wide product lines. The hard part of building a successful corporation is establishing a well-known brand, and once that is accomplished, many companies decide to use that popularity to promote more products that can increase revenue and profits.

It makes the most sense if the new products are within the same market sector, but it doesn’t have to. Samsung is a perfect example. In Korea, it is possible to work for a Samsung company, live in a Samsung apartment complex, drive a Samsung vehicle, use a Samsung phone, and probably a lot more other stuff.