Let's just call a spade a spade. She was put in place by activist investors who wanted to make a quick buck on the significant Alibaba stake that was held by Yahoo. The goal was never to save Yahoo.

Said activists made a good return and sold their stake, and Mayer pretty much ran the company in the ground while being compensated well for it. Nothing wrong with that in a capitalist world, however, that's all it is.

Anyone with half a brain could have done that, myself included.