There's a difference between ensuring companies creating beneficial products are financially rewarded and asking the customers to pay the full cost. The government can step in to pay for serious illnesses so we don't let people die from newly cured diseases. This already happens with Medicare/Medicaid, and it is tough to ask state governments to spend millions to cure a handful of people, but the alternative is capping drug margins or reducing the financial reward for developing drugs.

Also recall that in the current system not everyone who contributes to a new drug is rewarded. The basic research that scientists conduct using public money is not financially rewarded when its used by new drugs. Why do only people at the end of the pipeline get to profit?