Will anyone go to jail. Nope.
Drug companies are "legit" corporate versions of drug dealers.
For a short time, I worked for a drug company that produced a well-known pain reliever. They routinely pushed doctors to over-prescribe their big moneymaker (150 pills when 30 were sufficient) and move patients from milder, safer pain medications to their highly addictive moneymaker.
Large fines were eventually levied against them, but NO ONE WENT TO JAIL.
I don’t doubt their are some instances where unscrupulous folks push or surpass ethical boundaries.
With regards to international business dealings, however, this can get really dicey. China is especially difficult because they insist on having lots of control of the businesses that have a presence in their country. They skip the whole regulatory emphasis and go right for contractual obligation in ambiguous terms that can change or be re-interpreted.
For instance, the doctors can be pressured by the government toward one product or another. The government official may require a fee for their consultation. And that may be legal and fine with the Chinese Government. But when the Chinese doctors “charge” pharmaceutical reps to spend time with them or to review a product, it can be construed as a “kickback” (for instance. I have no solid knowledge of details). I do know that in these corrupt areas of foreign countries, usually at a local level. These are only “issues” when a local ruler is not getting what they want.
It’s a spiral. Once you are invested and in for a penny, your in for a pound. There is a fine line between extortion and bribery. And the winner gets to choose which it was.