Does anyone have insight into Google's strategy on all these subscription services? Is it to legitimize previous tech endeavors to make sure they're sustainable in the long term? Does Google forecast subscription services will make up a sizable portion of revenue in the future? Is the experience better at Google than anywhere else due to the vast amount of data and new technology being created everyday? I'm not sure…
With ad revenues drying up (Adblock, general lack to interest to ads) Google is forced to look at other avenues to make money and selling stuff to people is a great way for that.
Their entire strategy up until these new paid-for services predicated on giving people free services (Gmail, Docs, search) under the assumption they could pay for the development and support with ads.
It seems like they're shifting to a model seen by open source software creators - free to use, but any extra features or support will cost extra.