You need to learn the reasons behind the limited release from liability.
Case study:
Bendectin, an antinausea drug that really does eliminate morning sickness in pregnant women, and that (unlike phalidomide) has no effects on the fetus. It was approved to market in the 1970s. 1 in every 33 babies born in the USA, with mothers taking no drugs at all, unfortunately is born with a birth defect. 1 in every 33 babies born in the USA, with mothers taking Bendectin, unfortunately was born with a birth defect. The drug clearly didn't cause or prevent birth defects. But if you took the drug and had a birth defect, you blamed the drug. Lawsuit after lawsuit after lawsuit. More than 10. All won by the pharma company, since the data was crystal clear that the drug was not causing any of them.
After spending millions to defend (and win!) every lawsuit, and taking PR blows all along, the pharma company said "this crap ain't worth it. Let's pull the drug off the market, and let's never EVER EVER work on women's health or pediatric drugs (including vaccines) again".
What are the consequences? No drug discovery for portions of the population that need it.
The remedy? The government said that we will shield you from some liability (throwing out nuisance lawsuits) if you will please work in that area. You are not sheilded from liability due to fraud, deceit, negligence, false claims, or anything intentional on your part. You will be taken to the cleaners is you do that.
It is the price to pay to make it even possible for drug companies to work in drug discovery for those highly litigious populations.