Per the article:
Some of the names being thrown around as possible acquisitions by Microsoft are, frankly, astounding, even unthinkable. But the fact that they are doing the rounds is instructive. The most recent one we heard (from a reliable source close to Microsoft) was, in fact, Electronic Arts. We also heard a whisper about Valve and about Korean outfit PUBG Corp., which Microsoft last year signed to a timed exclusive for its hit survival shooter, PlayerUnknown’s Battlegrounds.