In the past, for just about any kind of company to exist required a massive support network behind it.
Take a small Mom & Pop grocery store running in the early 1900’s for example.
For such a business to operate successfully, they would probably need a vast network of suppliers who the owners knew personally.
They would also probably have to own or have direct access to a family farm where much of their products would be produced.
Unless there was an entire family of business also functioning to support this infrastructure, the whole thing would be likely to fail since a single small town grocery store would be unlikely to do more than pay the bills for a small nuclear family.
However in the case of contract manufacturing dietary supplements, many factors like having a network of support make it easy to succeed.