My point wasn't about the name but about the new product line. iPhone X is a new product line. Apple have made fundamental changes to the user interface. The iPhone 9 would be the successor to the iPhone 8. Whatever name Apple comes up with for iPhone X's successor, it's almost certain to keep the new 'all screen' interface.
Well I'm sure it's Apple's intention to not give up a super fat margin after establishing it. It remains to be seen whether in the medium term the market would keep its enthusiasm for a "legacy" iPhone range which becomes implicitly old and busted in the shadow of the "real" iPhone and competitor products.
My argument is not that Apple is looking to lose their fat margins, my argument is that they're looking to extend those margins.
The iPhone X almost certainly higher margin than the iPhone. My argument was that if consumers tolerate the $1000 price this time, they shouldn't be surprised to see future high end phones at similar prices.
