Commercial Interest
The subject of restricting handbaggage allowance was discussed at a meeting I once attended at the IATA HQ in Geneva some years ago.US carriers at that meeting stressed that they would reject anything that restricted their right to compete with each other. - Commercial interest. Citing risk analysis, such incidents are rare. BA at Las Vegas was widely reported upon in 2015 but how many other incidents have occurred since then? Stressing more strongly the need to leave carry on behind in the event of an emergency will be the only way carriers will act I believe.