First off, Blizzard did come up with the 3 IP's, there's no licensing or adaptation involved. How many developers actually have made 3 successful original IP's? You are talking as if other devs push new ips every month, but what you see generally is a Dev with 1 good IP, sometimes 2, and a few crappy ones. Blizzard has made 3 great ones (and is working on the 4th that YOU KNOW IS GOOD, because it's from Blizzard).
Secondly, what's bad with sticking with what you are good at? Blizzard makes excellent RTS', and excellent RPG's. Again, what do other developers make? Epic makes Shooters, Bioware makes RPGs or RPG based Shooters', Valve makes Shooters (Someone will mention Dota2, but that's not their original IP, and Portal is still technically a shooter, just like WoW is technically an RPG). So, when you look at it, Blizzard actually has more variety in genres than most big devs.
Also, why is Blizzard not embracing consoles a bad thing? It's not a step backwards to stick to a single platform. Nowadays everyone complains about consolization of games. Have you looked at the scale of a Blizzard game compared to a multiplatform game? The difference is massive. I'm not saying console games are bad, I'm just saying that platform specific games are bigger and better. This includes a console's exclusive game as well. Little Big Planet is on the same scale as most Blizzard games (excluding WoW), but it wouldn't be possible if it wasn't a PS3 exclusive.
Lastly, I like how you finish off by comparing Blizzard to EA. One is a developer, the other is a publisher with several developers working for them. If you want to compare with EA, you use Activision, which Blizzard is part of. If you want to compare something with Blizzard, compare a single developer from EA instead, and you will see how good Blizzard is.