Yeah I think people overstate the IP of Actiblizz. I get it though, their old games were absolutely amazing and I basically spent my childhood playing those games to death, but modern gaming is so much bigger that the people who look at those old ips fondly are a small minority now, so there isn't really any nostalgia to cash in on. I remember on the news when they did a story on the merger, they called Actiblizz the studio that made Candy Crush. Candy Crush is their most salient IP. Similarly Gen z growing up on games like Fortnite, Roblox or Minecraft, even Actiblizz's Call of Duty, this demographic isn't going to go crazy for the next Starcraft or Warcraft, probably not even Diablo.

It is sort of like if Valve actually made Half Life 3 now, most gamers don't even know what Half Life is, let alone why Half Life 3 would be such a big deal outside of being a meme.