Does the Movie Airplane Hold the Answer?

I just had a thought that the state of security checks at airports these days fondly reminds me of a classic scene from the movie Airplane. The scene involves multiple stereotypical terrorist looking individuals carrying large munitions including rocket launchers and grenades walking through security without cause for concern and then an 80-something year old granny walks through and is promptly body slammed as a suspicious person. The unanswered question is: Under what circumstances will a profiled based security check become reasonable? My answer is: Only when airlines are given full control and autonomy for security screening.

Currently, airlines simply defray the responsibility for security (which should be an inherent operating cost and responsibility for any business) to the government who surcharges every air ticket purchased to subsidize the cost of increased security. One concern I have is that this inevitably makes flying more expensive and burdensome since it becomes much more bureaucratic and inefficient. It also allows airlines to blame the government if revenue is affected by terrorism or security breaches and also procure unconscionable subsidies. Instead, airlines could compete with one another to ensure the safety of their flights, since a security breach would be blamed on the airline and not the government. I just wonder how much more advanced and secure air transportation would be if airlines were ultimately 100% responsible for their flights.