Prophecy2k
Veteran
Even if PS5 isn't BC, maybe they would keep the dev tools and majority of the API's the same or legacy support them, to make cross gen games development easier.
Also don't know if the PS5 would be in the same software ecosystem which would make it a clean generation break, even if it did support BC.
Couple things we know about MS for definite although may obviously change in the future, but this is their current plan.
X2 will definitely be BC, Phil Spencer has gone on record about being able to support old games for multiple reasons a few times.
They are committed to UWP and the windows store, Xbox live (even as a social network) Last weeks build highlighted all this.
So I expect the X2 to run UWP (and X1 games), be in the windows store and be on the same Xbox live network.
They didn't like how they had to do x360 BC, so I expect all X1 games to just work on X2 without needing patches, or re-downloads etc.
MS are pushing dynamic res etc, so on newer hardware it will play and look better or minimum the same.
So graphically majority of games will be able to scale between generations anyway.
But it's the non graphics parts that could be an issue, and if a studio wants to develop a game that can't scale then they can just target X2 for a couple years in, when there's a sufficient install base.
The likelihood will be that PS5 & X2 will release within a year of eachother if not the same year.
So most multiplat games will aim for PS5 & X2 if the engine can't scale down. If the engine can scale down then they will have a larger install base to sell to on xbox, e.g. indie or AA game.
If Sony goes clean generation break and MS does not, it may work in MS's favour.With people feeling more committed to the ecosystem due to digital library etc.
The big budget AAA games it won't affect either way to much, as the size of PS5 & X2 install base is what will matter to the publisher.
People always says BC doesn't matter especially couple years in, the difference now is digital, and it would be start of new gen. So that may help MS claw back market share at that time.
I can also see Sony using their streaming service to support BC if their console doesn't, which may be their way around it.
I'm not sure I buy that it's much more different now than last-gen's transition with respect to sales volumes of digitally distributed software.
Even if it were, there are like 60m PS4s to what 26-27m XB1s sold so far. So even if Sony do a clean break and MS don't, and gamers en-mass decide that this time BC is more important than new games, none of those 60m PS4 owners will be able to transfer their digital games libraries over to XB2, so it's kinda moot.