Even then who wants to fly half way around the world then change planes when Emirates or Singapore will take you there directly.
If you wish to fly to anywhere in France from Singapore, you basically have to go via Paris.
It may be radical idea, but get rid of the internationals from the capital cities and we will solve the problem for a few decades.
No one is offering an alternate solution as far as I can see.
I can remember going to FAC meetings in SY and discussing the second airport for Sydney. There are probably domestic Captains who don't know what FAC was. This bull$h!t has been going on way too long.