Earlier quoted context omitted.
They are consistently making wildy successful games over many genres: Warcrafts, Starcrafts, Diablo, WoW, Hearthstone, Overwatch. I wouldn’t be so trigger-happy to call a company dead just because it has been a few years since the last major title. Same goes for Bethesda.
All those games you list are bloated games that are really only fueled by nostalgia players now. When is the last time Blizzard really innovated and made something we all had to play like Diablo I and II, Starcraft, and of course WoW? I don’t think it can anymore. It sold its soul to Activision and all the passionate people are gone, judging by their recent games.
Usually it's a very bad sign when a company turns after the marked instead of being a leader. It's a sign of growing too big and getting conservative. It's a steady decline that is difficult to get out of.