The ink hasn't dried on the announcement that Microsoft is set to buy Activision Blizzard, and the repercussions are already being felt.

The Tokyo Stock Market reacted negatively today as shares of Sony Group (SNE) stock plunged almost 10 percent after the first hour of trading. That decline held firm all day, closing at a 12.78 percent loss. This is the largest stock value drop since October 2008, when Sony was forced to recall 100,000 laptop batteries due to fire hazards. As of this writing, Sony Group stock is down over 3 percent on the New York Stock Exchange after a double-digit drop in Tuesday's session.

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Microsoft's $68.7 billion purchase of Activision Blizzards's portfolio nets it some incredibly lucrative game franchises such as Call of Duty, Candy Crush, World of Warcraft, Overwatch, and Guitar Hero. A powerful library that some analysts are predicting will allow Microsoft to catch, if not surpass, Sony's commanding position in the video game industry. When finalized, this purchase will become one of the 20 largest such deals in history​​​​​​.

playstation 5 console and controller

The purchase price was based on a $95 per-share price, which was roughly 45 percent more than Activision's value prior to the announcement of the sale.

Over 25 million players currently use Microsoft's Game Pass subscription service. Sony’s PlayStation Plus service logged 47.2 million subscribers at the end of September of last year. However, with Microsoft adding Activision's 400 million global monthly players, analysts think Sony will be forced to respond in some manner as it is believed Microsoft could make all the Activision Blizzard games they just purchased exclusive to Xbox, hurting PlayStation sales and helping Microsoft close the hardware sales gap between them and Sony.

Some analysts claim the stock-price drop has been exaggerated because the video game business only accounts for just over a quarter of Sony’s operating profit. Citing strong earnings with the company’s movie and television business (i.e., its latest blockbuster Spider-Man: No Way Home), as well as the fact that Sony supplies image-sensing semiconductors to customers like Apple Inc., games are just one component of a diversified business model.

There were positive gains for other game makers in the wake of the announcement. Shares of Japanese publishers Square Enix, Capcom, and Konami all rose approximately five percent, while Ubisoft's stock price rose some 11 percent.

Microsoft's acquisition of Activision Blizzard must still pass inspection by antitrust regulators, and probably won't be finalized until 2023. This is also when Activision CEO Bobby Kotick is expected to leave the company.

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Source: The Financial Times (via Eurogamer)