It also helps that all of Blizzards game are inherently multiplayer focused.
Yeah, and the IP is good enough to pull it off. Like, Hearthstone? Jesus christ that's a wonderful game. It probably hooked alot of people who DON'T like WoW(I know my friend who hates WoW loves playing it), it's presentation is slick and fun...Heroes of the Storm ups that ante, Overwatch is quirky enough and at the right time for a team based shooter(TF2 came out what...7-8 years ago?), Diablo SC and WoW are still solid for what they are.
Bethesda...I mean the franchises are iconic. Fallout, Elder Scrolls, Doom, Wolfenstein....Dishonored is shaping up to look nice, Battlecry or whatever....looks horrible(seriously the worst of the line up.)
Can they pull it off? I mean.....it'd be riding on the backs of Fallout and Elder scrolls. They want to create value and attachment to this platform. Maybe even have a mod store where they can benefit creators.
It's early to tell, but I get the basics of why they're doing it. Whether it'll succeed or not...that's the question. They have a strong base however to launch with a bang.