Microsoft might improve Blizzard and the rest of Activision, but it will be a net loss for the industry. Microsoft has too much power in the market already, and that will only grow over time as they use their power from other segments to take over more. I see it in the business world already. They basically took over the entire market for business email, then pretty much dropped their self hosting options, leaving most business with only the option of M365. Which is great, until they decided to change partner terms on a dime and increase prices and there wasn't a damn thing we could do to stop it. Our options are either leave for Google(who's business tools absolutely suck), or look to FOSS, which has a rather high maintenance cost. Microsoft has that industry captured, and it is almost impossible to break out of.