The exceptions to all this are, and will probably remain, the Middle-Eastern carriers.
I wouldn't bet money on it. GF cancelled first (they now have "Falcon Gold" and economy); and I've flown a few QR flights that are Business/Economy, although not on all routes.
I think if you fly Emirates you can get your private cabin on the A380 if you're in 1st, but my mates have flown it and they say it's really lonely!
