By Rob Lenihan Bestselling franchise will remain on Sony platforms through 2023 at least, even though its owner is being acquired by Microsoft. The next three titles of “Call of Duty,” the hugely popular first-person shooter franchise, will be released on Sony’s (SONY) – Get Sony Group Corporation Report Playstation, even though the game’s publisher, Activision Blizzard’s (ATVI) – Get Activision Blizzard, Inc. Report, is being acquired by software giant Microsoft (MSFT) – Get Microsoft Corporation Report. Activision had already committed to making the next three Call of Duty’s available on Pla…