It's worse than just honestly believing in their own lies,

We are talking about two different kinds of ppl here...

1. The lab scientists who develop those may believe in it...to justify their own work, or being an honest fans of science.

2. The business execs pefectly know what they are doing - and all they care about is maximizing their profits. In the "health industry" nobody cares about people's health - just maximizing their profits and expanding markets at any price, first of all at the price of the health of their customers. Indeed, in order to make ppl buy more drugs, you gotta make them sicker first, isn't it??

I was studying Business Admin. as a major in college...and was constantly taught that the longterm goals of any business is not just making a single sale, but creating long-term customers who will return and do more business, buying more goods and services in the future.
That's exactly what they are doing - "hooking" people for lifelong need in their products, even worse than street drug pushers who offer innocents "first one for free" - they make "first one" forcible.

If my point here is still not clear, let me give an example of what i mean:
Until my girl had developed Crohn's as a result of
"mandatory" Hep B shots, she was PERFECTLY healthy and didn't need to buy and use any meds, except maybe for OTC cold remedies once in a blue moon (daily practices in OUTDOOR swimming pool 12 months in a year built up her resistance pretty good). After she was diagnozed, she had to be put on prednisone for 4 months, then on 4 types of pills that she is supposed to take permanently. All of them are very toxic and eventually would cause a lot of permanent damage in her body that will require even more dr's visits, hospital stays, pills and injections to treat. First one: within several months after prednizone she developed severe skin reaction, and now her face and upper body is covered with white discolored blotches - i don't know if they ever fade.Only couple months before her Crohn's she said, "mom, all girls in my class are envious of my skin" - now she's continuous client of a dermatologist, along with GI specialist, immunologist and a Chinese herbalist.

I think it's much worse than the honest faith. It's a premeditated crime.