Even if it's safe, the harm is in rewarding drug companies for producing very expensive products that don't work, and selling them to desperate people and their families who will sell off everything they own and go as far into debt as they can to pay for them. This creates incentives that we don't or should not want.
Extending this further, the belief that a competitor has an effective drug gaining traction in the market while you are still at an unpromising point in research could reasonably lead companies to focus their research elsewhere. After all, your costs don’t go down for research if a competitor is already delivering, but your likely returns do drop.
The FDA could impose a ceiling over the price the company is allowed to charge if they are in a situation where there is reasonable expectation of efficacy but the trials haven't been consistent. Would that appease your concerns?
> We understand that high drug prices have a direct impact on patients—too many American patients are priced out of the medicines they need. However, the FDA has no legal authority to investigate or control the prices set by manufacturers, distributors and retailers.