I can fix the ridiculous drug pricing scam that's being run in this country with one law. Just make it illegal to increase the wholesale cost of a generic medication (no loophole rebates or anything allowed, has to be the final price) more than the rate of inflation except for certain predefined exceptions (increase in supply costs, new FDA approved indication, etc.). Drug companies could petition for exceptions with whoever (FDA? FTC?). Honestly, the system would make money as drug companies would inevitably break the law and the government could go in and impose hefty fines. Charge for a petition application so there isn't just a flood of applications for each medication.
No more incentive to price fix and monopolize. It's still a free market as the end price will be the free market price minus artificial increases for detrimental reasons. Rule number 47 of management is focus on outputs, not inputs. Don't outlaw rebates and monopolies, outlaw stupid price increases.