Is any of this relevant?
If you want to travel you look at the TOTAL cost of the fare, make your decision and decide to travel or not.
Who gets what of the pie will differ on just about every airline on every destination.
How long will it be before some carrier breaks down the costs even further? Why not airport coaching, aircraft loading, aircraft maintenance, pushback, taxy fuel differentials, toilet servicing, crew uniform, office stationery, senior management bonuses etc etc. All costs, all irrrelevant to the passenger.
The only thing that is relevant is the total cost so why get worried about who is getting what of the fare you pay?