for years you had people in MMO circles claim WoW was the first MMO even unironically, so it's not like blizzard ever had to try.
Crap like that is why I rolled my eyes at all the people smugly shitting on paladins for ripping off overwatch and posting the dunkey video for the millionth time. Paladins had been in development before OW was even announced and despite what clout blizzard had, they were never that original:
Starcraft borrowed from warhammer 40k
Warcraft borrowed from warhammer fantasy, and from what I have seen WoW had some pretty blatant shit copied frol D&D.
I say Diablo was one of their more original IPs but that was on virtue of being made by another studio that was then bought out by blizzard.
Warning, autistic rant coming:
I've been salty at blizzard for a decade now, I was a fan of the first two diablos and was excited for diablo 3 (which took forever to release mind you, I remember reading stuff about the game in their website in 2007 or 2008 ffs) which ended up being a bland piece of shit and even the removal of the auction house and the expac didn't fix it, it just made a bland game into an ok game)
While I don't play starcraft, I do remember the disappointment about it coming in parts and the forced e-sports (DOTA2 and League ended up absorbing part of the audience too). In fact I am remembering a similar situation with sc2, where the first "expansion" brought a single new unit or some shit.
Lastly WoW had lost popularity and you kept hearing about how "all of my friends quit" and endless bitching about the dungeon finder and casualization of the game and every expac being bad (and yet they kept getting excited the second a new expac was announced).
In short I think only fanboys and normalfags not exposed to previous blizzard shittery are surprised OW went the way it did. I also said this a lot before, but I am amazed blizzard was able to kept going as long as they did with their glacial game output, they are not like valve who get most of their money via steam (the steam marketplace and trading cards have made them so much money it is ridicolous), guess wow subscription money and then OW lootboxes was more than enough.