The question is
Who does google optimize for?As a publicly traded company, it optimizes for GOOG. I have nothing against google, but I do think there is not enough skepticism our fear about them eating the whole stack.
* Receive gmail link from friend.
* Use Chrome Browser as gateway to internet.
* Use DNS to resolve that URL.
* Site built on Angular and has new SPDY tags.
* Libraries and Fonts served from CDN.
see something unclear at the url.
* use google search to find that link
* google analytics beacons on both websites report your traffic.
I am concerned about the temptation for google to get up to something naughty. Luckily, as we now, it is an undisputed fact that our data is 100% safe with google and there are no organizations trying to actively attack their network or intercede. We also know, that compromising an individual (either an employee or a customer of google) is 100% impossible, never has happened, and never conceivably could happen. So it isn't a big deal.
So, is the issue you can't run a mailserver? Maybe. Maybe not.
You can't crawl many valuable sites now, unless you are google bot or a big vendor.
2 (3 if we count microsoft) companies can ban you from competing on mobile.
etc.
The slight losses in some areas to optimize for what google wants are small. In aggregate, they are wildly irresponsible for us to accept and we shoudlnt.