Why can’t Microsoft grow organically like Sony does?
MS would need to have their own ND, Insomniac, Guerrilla, Quantic Dream, Ready At Dawn, Housemarque, Bluepoint, Arrowhead, Firesprite, Ballistic Moon, etc. working for them -in these or previous teams- in sucessful 1st/2nd party games before being acquired, and generating enough money with the division to reinvest part of their profits in the acquisitions.
But their gaming division doesn't generate money as SIE does, so they got the money from the corporation. And doesn't have partners that appealing to them, so they prefer to go for big brands even if don't have a long relationship of these people working for them for a while.
Different strategies for very different cases. Sony marries their long term girlfriend which may not be the best looking one but have a good relationship with them, and help them improve. MS Gaming instead asks for money to their rich cousin to buy a Ferrari to see if they can attract a playmate. Sony's case usually has a better ending.