Currently Online 
Honestly, the Console effect would have been minor as Blizzard releases a title like once every 5 years and Diablo, Overwatch, CoD were remaining multiplatform in the medium-long term so we wouldn't have really seen a major hardware push until likely next gen and by then, that would likely line-up with Elder Scrolls, so meh, Lol.
Would have been a big boost to Game Pass on Xbox but that appears to be growing still, if a little slower than expected, although the plenty of AAAs in the future should improve that and it would only be a big boost to Game Pass on PC if Windows Store was actually fixed or Game Pass PC was built into Battle Net.
The biggest loss by far is obviously, the billions in revenue & profit. But also the huge blow to their Mobile store ambitions, I would not be surprised if they scrap that idea now, they just have no chance of competing with iOS and Android using XGS + Zenimax alone, so they'll have to suck up releasing on iOS/Android only and hope regulators come down on their App store policies.
Funny that Microsoft changed their own store policies for this and allowed unions but regulators obviously didn't give a shit about the workers, Lol. Ah I wonder what morale is like at Activision-Blizzard now, I anticipate they're going to massively bleed talent over the next few years. Also feel a little bad for Imagine. 
Sucks that Xbox won't match Windows anytime soon, it may have convinced Satya to give Xbox more power over them, those rumours that Windows and Xbox teams are fighting over the Windows Store and Xbox App is still connected to the Windows Store but the Windows team doesn't want Xbox changing it.
