He doesn't care about Xbox hardware sales or game sales for it. His priority is Gamepass, to secure all these games to have them there and then like with Minecraft to sell them everywhere, something they'll need to compensate lost sales in PC & Xbox due to GP.
Activision Blizzard must have a big ass cost in salaries, offices, tools & licenses, etc. So they need as much as revenue as possible from everywhere to have a healthy business, specially if all their games will be day one on GP (maybe not some of the first ones if Sony had them signed).