First, some commentators have asked whether we will continue to make popular content like Activision’s Call of Duty available on competing platforms like Sony’s PlayStation. The obvious concern is that Microsoft could make this title available exclusively on the Xbox console, undermining opportunities for Sony PlayStation users.
To be clear, Microsoft will continue to make Call of Duty and other popular Activision Blizzard titles available on PlayStation through the term of any existing agreement with Activision. And we have committed to Sony that we will also make them available on PlayStation beyond the existing agreement and into the future so that Sony fans can continue to enjoy the games they love. We are also interested in taking similar steps to support Nintendo’s successful platform. We believe this is the right thing for the industry, for gamers and for our business.
This is based on the majority of fans of said Blizzard Activision series that said it might only be on Xbox however, Microsoft is reaching out in this recent blog that they have plans to support the other two big consoles on the market in the future. This is what I always wanted for them, but also they just really want their money and to help drive competition support so we can have some choice as not every console is owned equally.
Source: Adapting ahead of regulation: a principled approach to app stores - Microsoft On the Issues