Yes, jetset lady. It's money. Since no airline will give themselves a competitive disadvantage (weight) in the name of safety - nothing will happen.
- All carriers keep away from saying they are safe or what will happen in the event of a prang.
- When asked, they always say "safety is our first concern".
- When asked why they don't install further precautions they say, "more research is needed".
If the world authorities stated that every new a/c had to have water atomisers (not sprinklers) and that different fabrics/materials on new aircraft must be used to reduce smoke/fumes - then everyone could benefit over the time of fleets being renewed. Carriers could stay with older machines or upgrade with a positive statement.
It will not happen.