We know that 20% development time for google's marketing new products has failed at the market commercialization stage.
Google Engineers don't believe in marketing, but marketing is not easy, and successful marketing is not a commodity.
Hence google failed in Social Media products so far.

Pic Source: mashable.com
Google Engineers don't believe in marketing, but marketing is not easy, and successful marketing is not a commodity.
Hence google failed in Social Media products so far.
Pic Source: mashable.com