Tombstone mentality is an aviation informal term that notes air safety is often improved only after somebody has died, which points out a fatal defect.
Strictly speaking, tombstone mentality decisions are examples where there is no incentive for an economic actor to be a 'first mover' and promote safety. Sometimes this is a result of market pressures (nobody wants to pay for extra safety, despite their talk), or, it may be a result of legal disincentives such as product liability lawsuits (if a design change is made that is not government approved and somebody is injured, even if the design change was not the reason for the injury, the company may be liable).