https://www.theverge.com/23778253/google-reader-death-2013-r...
The article above is actually very interesting, because the story it tells is that Google's two highest-profile failures are actually one failure. Facebook freaked them out so much that they scrambled to build something comparable with Google Plus. Google Plus stole most of the company's mind share but was executed so poorly that it never went anywhere. The company got major egg on their face from suffocating Reader to make Plus, then again when Plus died after having been pushed so hard.