I think Sony really did a great job this generation. Right from the initial Xbox One and PlayStation 4 E3 announcements Xbox has clearly blundered significantly and didn’t do enough to recover. I think the shade on stage that Sony threw toward Microsoft that year is perhaps the most memorable moment of any E3 for me.
Exclusives seem to be a huge issue for everyone I speak to, there is just nothing very decent on Xbox that isn’t also on PC or PlayStation. Certainly nothing of interest to me anyway. Nintendo and PlayStation always have a plethora of exclusives that make the consoles worth buying.
In Japan I noticed that the Xbox One was pretty much non-existent on the shelves at all while PlayStation was everywhere. Given that Japan is a fairly big market for gaming they surely help boost Playstation’s Numbers significantly. Xbox has never been huge in Japan though so I wouldn’t just limit that to this generation.
My younger brothers (11-14 years old) seem to be really into their Xbox One consoles and it seems to be popular amongst their circles but not many people I speak to give any care about Xbox whatsoever.