Buy a plethora of studios. Pay an order of magnitude over the odds for the big ones - just to be sure you get them! ‘Rescue’ smaller ones of questionable financial value - as part of Xbox they’d somehow be successful enough to justify the price paid. Heavily manage the studio heads - but, uh, also give them total creative freedom - and allow them to make niche games. Sell hardware at a loss - but also make the games available on all platforms. Don’t allow any software that takes advantage of your most powerful hardware, because it also has to run on the other, less powerful console you are also selling. Also, the future is streaming! But, uh, maybe not!
Not just the strategy, but almost every aspect of the ‘strategy’, was incoherent - as current management is very close to outright saying.