So why can't M$ achieve backwards compatability with XB1?
Or is it a "maybe, possibly, could be from the cloud.....some day."
They aren't trying hard enough or have an ulterior motive.
No benefit of the doubt for those weasels.
Same can be said for the PS4, especially since it has more power.
Neither console is fully featured for what they want yet, so maybe they'll consider backwards compatibility once they have their standard console features done.
It's a more complex matter, the Xbox 360 and PS3 are a completely different architecture, and much more complex than their previous consoles, the only way to do backwards compatibility is to emulate on the console, which would take a lot of work. Emulating takes a lot more power than the original hardware used so it's possible that the new consoles can't even do it.