Xbox live had a good head start in the digital revolution. PS store didn't really start up properly until about 2008, with many games only coming in on a regular basis in late 2009/ early 2010. Xbox live had tons of games on it's store by then.
@OP You should have said you were discussing the games available on each, i though you were comparing every thing
Xbox One, PS4 and Switch (+ Many Retro Consoles)
'When the people are being beaten with a stick, they are not much happier if it is called the people's stick'- Mikhail Bakunin
Prediction: Switch will sell better than Wii U Lifetime Sales by Jan 1st 2018