Why Haven't We Seen Sequels To Blizzard's Biggest Games?

The "games as service" concept isn't new, but 2017 is the year that it has really taken hold. Instead of jumping straight from sequel to sequel, developers across the industry seem to have shifted more to creating updates for their games and extending the time you spend with each title to its absolute maximum. And few companies take advantage of that system better than Blizzard.Famously, Blizzard doesn't move on to sequels quickly. Diablo III launched five years ago. Starcraft II started ten yea