[vonklaus]

Marissa Mayer executed the goal she was brought in for which was to create positive market sentiment so they activist investors who brought her in would make significant returns.

That said, obviously it was possible to turn around Yahoo, and the investors, Mayer and the company would be better off if she succeeded. I believe she tried genuinely hard to fix it and I believe she failed harder. Obviously, Microsoft is in a much different position but Nadella has had such success there that you would expect Mayer could've at minimum kept the company from failing.