Marissa Mayer the executive definitely crashed a burned. She created no value for Yahoo. There isn't even one Yahoo success during her entire tenure that she is responsible. Marissa Mayer spent $2.3billion dollar on completely worthless startups.

Marissa Mayer got lucky at Google and will never get lucky again. She will never do anything important in tech again.

Could anyone save Yahoo? I don't know, but there are certainly people that could have done a better job than Marissa Mayer.