I do wonder though how much of a shock this is to Sony.
I remember when MS bought Minecraft, Sony was initially worried they'd pull the game from them... And that was "just" Minecraft (I know it's huge).
This has to worry them. 3rd party games are a huge draw to any console, so having both Bethesda and Activision vanish within less than a year and half must have them in some sort of panic mode.
There's almost nothing they could announce that could topple this news. This will literally stay the biggest news of the year.
Heck, even if Sony somehow bought Take-Two within this year, it still wouldn't be as big, IMO. Add Capcom and Square while you're at it and it's still not as big.
That's literally the kind of stuff they'd have to pull in order to compete with MS's current pace. I don't see it happening. The smaller publishers? Maybe. They'll have to pick and choose.
I also don't see them going away, whatever happens, because Sony's gaming division is severely undervalued.
So far, us 'fearmongers' have been pretty spot on. This will not be good for gaming and the people cheering these sorts of acquistions won't always be cheering, especially when the shoe is on the other foot.
Big 3rd party publishers will become a thing of the past and not one person on here can convince me otherwise after all this.