That's cause M$ abandoned it...  They are still making NEW titles for PS2, yet XB1 games have flat-lined.  PS2 still sells great, XB1 is dead, and a lot of people gripe with M$ for doing that... It was partially the fault of nVidia, who said they would stop making the GPU.  Still, they could make a nice portable these days...

They should open the licensing for XB1 like Sony did with PS1, and let anyone make games for it, who cares now, they decided it wasn't worth the effort, and FORCED everyone to buy a 360 with the NOW abandoned backward compatibility...  So, why not just allow new games to be written without having to pay a fee to M$ for it?  M$ makes a lot of stupid mistakes.  Sony is LUCKY to have the PS2 still selling, it helps fill in the money pit created by PS3.

I still have three XB1s, one I will keep, it is a collectors edition, only around 200K of them were made, so it has been said.