Having such a huge backwards compatible catalog of games is more reason to get both consoles or to cross over to get the other console too. Now one can play all Sony titles from 2013 onward to 2027 (PS4 to PS5) and all MS titles from 2013 to 2027 (Xbox One to Xbox Next) with sizable number of MS titles going back to 2005 for X360 titles and a handful of titles going back to 2001 for Original Generation Xbox titles.