Well, it is all about pricing... for ex: CDG
return on F is close to $14k, and J is $9k, etc. Yield is high, and customers who want luxury and comfort will pay. Have you seen the SQ
flights lately. All the flights I have been on have been nearly full. This is a great differentiator and until another carrier emulates them, they will make money and then will innovate to provide more....
I for one will not pay that much unless my employer/customer pays for it. But there are people with high disposable income that will frequent these services.