I don't know from me it's much more dangerous for consumers, the market, and players what Microsoft is doing. I think it's much more impactful when a very big company like Microsoft (which is already very strong in many digital markets) is buying a huge studio with as many big IP's that Bethesda (and which are traditionally multiplat).
In comparison, if Nintendo (or even Sony) bought tomorrow a medium size studio with few IP's and if those studios were already usually Nintendo exclusive (financed by them) it would be much more acceptable. Why? Because Nintendo as well as the studio are much smaller. Plus the IP's are already exclusives to Nintendo platforms and it would so not really affect the players and the market to the same degree.
I also find what is doing Sony not necessarily good but not that bad either because it's just about one IP, usually for a short period of time. It's not going to affect as many players as what is doing Microsoft and not for as much time.
Plus, at the end of the day Sony/Nintendo will never be able to capture the market with such predatory practices like what can potentially do Microsoft or what could do Google, Apple, etc.
So I honestly feel it is a little dishonest when people are criticizing what is doing Son but seem ok with what is doing Microsoft. I mean it's not even on the same scale of bad. I am not against Nintendo, Microsoft, Sony buying studios but I find it alarming if it's Big studios like Take 2, EA, Ubisoft which have multiplat IP's. Even worse if we're talking about a company the size of Microsoft.
(sorry for my English btw )