I'm not as sure as you are. At some point you have to stop making essentially 3 different versions of the game. Sure games that run on the X now can run on the One,but when next gen comes out the X will be the inferior version and then the One will essentially be what the 360 is to games now. I just cant see a dev making a game that runs on a console that outdated beyond maybe the first party games
Well its more like two versions, all X1 games work on the X1X whether or not they utilize the specs. They give the impression supporting the specs of X1X is relatively easy though.
In my head I see it like this. If any game can function on X1X at 1440p-4K and isn't bottlenecked severely on the CPU, then GPU and CPU isn't much of barrier on a base X1 because they could reduce the resolution and other visual settings.
However, if we see games that push the X1X to 1080p/30 fps and exhausting all of the 9GB of RAM with medium graphics settings, then supporting the base X1 becomes a struggle.
Then its also worth considering most games aren't exactly cutting edge if you look at the entire library of every current console. At the very least that means more simplistic and less demanding support could continue for a long time. For example, there are countless indie games that could function on 7th gen hardware but they just aren't worth the effort to port.
Crackdown 3 for X1S/X1X (4/5) - Infinity Blade III - for iPad 4 (3/5) - Infinity Blade II - for iPad 4 (4/5) - Infinity Blade - for iPad 4 (4/5) - Wolfenstein: The Old Blood for X1 (3/5) - Assassin's Creed: Origins for X1 (3/5) - Uncharted: Lost Legacy for PS4 (4/5) - EA UFC 3 for X1 (4/5) - Doom for X1 (4/5) - Titanfall 2 for X1 (4/5) - Super Mario 3D World for Wii U (4/5) - South Park: The Stick of Truth for X1 BC (4/5) - Call of Duty: WWII for X1 (4/5) -Wolfenstein II for X1 - (4/5) - Dead or Alive: Dimensions for 3DS (4/5) - Marvel vs Capcom: Infinite for X1 (3/5) - Halo Wars 2 for X1/PC (4/5) - Halo Wars: DE for X1 (4/5) - Tekken 7 for X1 (4/5) - Injustice 2 for X1 (4/5) - Yakuza 5 for PS3 (3/5) - Battlefield 1 (Campaign) for X1 (3/5) - Assassin's Creed: Syndicate for X1 (4/5) - Call of Duty: Infinite Warfare for X1 (4/5) - Call of Duty: MW Remastered for X1 (4/5) - Donkey Kong Country Returns for 3DS (4/5) - Forza Horizon 3 for X1 (5/5)