It may have taken a while but Microsoft has finally come up with a figure for both the number of Xbox Ones sold and in the period they've been sold: "More Than 2 Million Units in the First 18 days" is the official word.
This is a huge achievement - as is the line be rolled out: "Sold Out at Most Major Retailers". There is more flesh to lay on these bones as well. But the long and short is that we have two competing consoles in Xbox One and PS4 which, according to a limited reading of market theory means we've actually got competition. Sure, you could say we've got a duopoly (ideally Nintendo will get a look in). But let's see what Microsoft says:
"Since its launch 18 days ago, Xbox One is proving to be the must-have gift this holiday season with more than 2 million consoles sold through to consumers worldwide, averaging over 111,111 units sold per day – a record-setting pace for Xbox. Millions of fans around the world who have purchased Xbox One have shown incredible engagement with the all-in-one games and entertainment system, spending over 83 million hours in games, TV, and apps on Xbox One since the system launched on Nov. 22."
But then it goes all hardcore taking on PS4 with, "Xbox One is also proving to be the most popular online multiplayer community for gamers with over 39 million Xbox One achievements unlocked and 595 million total Gamerscore achieved."