When patients are harmed by quacks, it is a true problem and those quacks should be incarcerated and never allowed near medicine again. If there are too many quacks, then this is a systemic problem that needs to be addressed completely separately from malpractice and professional insurance.

When patients are harmed by medical errors caused by non-quacks, that's just tough luck. Not everyone can be saved. Creating a gigantic medical malpractice insurance industry so that a few hundred surviving families per year can have lottery jackpot settlements isn't a solution in any way, and has done very little to incentivize fewer errors.