Isn't this what Sony did in 94? Having a financial strength from the company as a whole, selling cheaper than its competitors, buying out a big publisher at the time (Psygnosis) and moneyhatting exclusives left and right because they were the biggest one by large to afford that?
First of all let's say that "whataboutism" isn't going to change what Microsoft is trying to do here and it's not going to make them look better.
But even if you want to go there, no Sony has never done what Microsoft is trying to do here.
It wasn't even possible, not only the company never had such financial strength but the company's culture simply couldn't allow it.
Sony like other Japanese companies back in the 90s and early 00s was effectively organized into silos where each division was just doing their own interests and was basically in competition with the others. It was common that certain divisions made deals with other companies that were the main rivals of other divisions.
This mentality costed them to miss the whole digital revolution and created tons of issues that only Kaz Hirai was able to fix but that's relatively recent history.
Also Psygnosis...lol...do you think they defeated Nintendo and Sega thanks to Wipeout and Lemmings??
What Sony did was to create a really good product while their competitors were busy sabotaging themselves with idiotic decisions.
Nintendo with their cartridges, burning bridges with all third parties because they thought they were superior and didn't need them (they banned Squaresoft altogether from their products because of the FF7 betrayal....just think of the stupidity), Sega with their USA and Japanese divisions fighting between themselves and creating shitty hardware with the Saturn.
Sony was just at the right place at the right time, they took advantage of the situation and they made some good business decisions like betting on Europe with localizations. At that point they had all the third party support in the bag.
You're saying that Microsoft is doing here what Sony has done but it's completely wrong, the only moment Microsoft did what Sony has done is during the beginning of the Xbox 360 generation and guess what...it was the peak of their success they're failing to replicate with their current bullshit.