I work in the biotech industry and you see lots of people who move from the FDA to companies and back.

But if you're a company trying to get a drug approved, who else are you going to hire? Same with the FDA. If they're trying to regulate manufacturers, hiring someone from a manufacturer is an ideal way to get that talent.

I'd be satisfied with some strict rules around lobbying and gov't influence. But banning people from moving around? That seems excessive and likely detrimental.