By Colette Bennett Activision Blizzard won’t be the last studio Microsoft acquires. Clawing your way to the top of the video game industry pyramid, in terms of pure revenue, is a very difficult task. Chinese game company Tencent (TCEHY) has been king of it for some time now with a reported $70 billion in revenue. Two of its biggest mobile games, “PUBG:Battlegrounds” and “Honor of Kings,” both bring in billions of dollars a year individually. Tencent also owns stake in a total of 41 gaming companies across many major countries, including Epic Games, Activision Blizzard (ATVI) – Get Activision B…