Is "we just won't fund your drug, even though people will die and you're the only option on the market" actually something that could happen? Would that be politically palatable to anybody?
I guess there's patent invalidation and forced genericization, but that would kill innovation real quick.
I think a far better idea would be to impose very strict caps on admin / non-medical costs, potentially at the expense of paying a bit more to fraudsters, changing FDA regulations to minimize (death from side effects + death from no available drugs) instead of just the former, as well as becoming a lot more aggressive about expensive and unnecessary procedures that doctors perform to get rich quick.