The free market. Nothing motivates a company like profit and profits come from building a loyal customer base.
No, profits come from buying low and selling high - like, for instance, the fly-by-night companies that, in your unregulated world, pack whatever dried green stuff they can find into pills, call it "St. John's Wort" and "Echinacia" and sell plant refuse for a dollar a pill, then close up shop before they can be sued.
Quick - without looking it up, tell me the brand name of the herbal supplements in your medicine cabinet.
You can't, can you? If these companies are operating with essentially no brand recognition at all, how are you even going to
remember to punish them with your pocketbook?
In the real world, we understand that even in
actual medicine people don't have the expertise and training to accurately associate health outcomes with interventions. If you take Supplement A, and you pray, and you eat your mother-in-law's chicken soup, and you got some rest and drank plenty of fluids, and then your cold symptoms went away - what worked? Was it the supplement or the rest? The prayer or the soup? Or was it none of it, and you just got better on your own?
Plenty of people use Head-On for their headaches and are convinced it works, even though Head-On
is nothing but a wax stick. It has literally no active ingredients. The thing about headaches is -
they go away on their own. And you rarely time how long it takes, so you're completely unequipped to assess the efficacy of Head-On.
Assessing the efficacy of a medical intervention, or a drug, or an herb, isn't something you can do just by taking it and seeing if you get better or feel better. Haven't you heard of the "placebo effect"? It's not magic, or "mind over matter", it's just a function of the fact that your subjective experience of illness is subject to your own expectations, and if you
expect to feel better, you'll convince yourself that you really do. The efficacy of treatment, herbal or traditional, has to be assessed on the basis of double-blind trials. That's the only way to know if they really work. Anything else is just quackery.