
Because it’s one of the most successful titles of the year? And Microsoft — as any other big corporation out there — is interested in pumping up their revenue? Here it is in words, we all know that. But even though apparent, these aspects are only parts of a bigger picture.

From GI.biz: "Krafton, the Korea-based publisher behind PlayerUnknown's Battlegrounds, released its Q3 financial results alongside news on how it's expanding its collection of studios.
The company reported that it saw revenues of $328.5 million and net profits of $171.5 million, the latter marking a year-on-year improvement of 27%.
Krafton also announced it plans to acquire Neon Giant, the developer behind The Ascent, and open a new studio in Canada."

The latest PUBG update transforms the weapon meta in Krafton’s battle royale game, bringing changes to vehicles and Deston to make winning even harder

PUBG, the battle royale game from publisher Krafton, will be banned in Afghanistan in 90 days as the Taliban says it is a waste of time and too violent
Because they cant make new quality games of their own.
The developers also want this game to be cross platform play and Microsoft has the most stable servers and cloud computing across the globe. They are also in depserate need of some big hits and their 2017 line-up is severely lacking.
It's a shame Microsoft still can't produce a huge hit with a new IP of their own this generation