Again, that isn't HARDWARE limiting GAME PLAY.
That's a developer choice to limit game play in order to achieve a certain level of graphical fidelity. As other's have stated there was nothing preventing them from making HZD with flying by reducing graphical detail
a bit.
https://fr.slideshare.net/guerrillagames/horizon-zero-dawn-game-design-postmortem
HZD prototype with flying gameplay
Again, hardware (in the vast majority of cases) limits how much graphical fidelity you can have, it doesn't really limit the type of game play you can have.
There are, of course, exceptions. Claybook has a certain level of physics modeling that directly impacts the gameplay. But even in that case Sebbbi was able to go from thinking it required a certain level of hardware at the start (not possible to port it to NSW) and then later discovering with some work he could greatly reduce the hardware requirements (so it could run on NSW) for the exact same game.
And even then, you could still have a game with the same gameplay with but much lower granularity (larger physical particles for physics simulation). The visuals would obviously suffer, but that's graphics and not gameplay. Gameplay might be rougher operating on larger particles/voxels but it would still be the same game play.
Or to put it as I've been saying for a while now WRT the next gen consoles.
- I doubt we'll see new forms of game play that don't already exist or couldn't be done on current gen hardware.
- What we'll see is greater graphical fidelity (this includes physics in most cases) or more convenience in games.
- AAA developers may or may not take this opportunity to incorporate game play elements that INDIE developers are already doing because graphics are secondary to gameplay for Indie developers. As opposed to AAA developers where game play is secondary to graphics (HZD, for example).
- And just so people don't think I'm saying HZD game play isn't good, it is. But as you said above the HZD developers obviously limited game play (flying) in order to have better graphics.
Regards,
SB