More like they (Google) don't really care which processor or OS you choose to use, Google Chrome & Chrome OS is still there operating in the same fashion as the other places you see Google Chrome & OS used.
One would be tempted to think Google would be "open source" fanatics, but indeed they are not really any sort of fanatic. You would think they would push their OS, but they really don't try to push it at all.
Other than slowly making it better, that's all the push it ever gets.
If you run the Extended Chrome Browser on ANY OS you get most of the benefits of the full Chrome OS now days (if you will sign up for drive space and the other services and agree to mirror your Chrome Browser on their servers you even get a large degree of protection against data loss as well).
Google seems to be slowly taking over computerdom by osmosis, slowly getting folks to willingly sign up to be supported by their server farms and cloud based number crunching. Young people especially (got no bucks to spend, free is good) seem to fall into their camp very willingly .....
Kids use Google to share homework workloads (do it on Google and everybody can kick in work on the same document at the same time). College kids use Google a lot too on group project work (it is required in many classes to CO-OPERATE instead of compete to get a good grade).
We older people don't understand this as we were raised to be self-sufficent and very competitive by nature. To us a PC means "personal computer", it's mine, keep your mitts off my machine.
Sharing creating your homework would be "cheating" to us .... but not to today's young folks -- cooperating makes sense to them.
I use an Android phone and I use Google servers all the time. If I lose my wifi signal and lots of the things I normally do will flash me a message "unable to contact Google at this time" when I do things I think are being handled on the phone itself only to find that a server processor has been doing it all along.
Some of the issues with rolling out modern full Android phones to the rest of the world is the background services that Android requires to have done off the phone at their local server farms.
First, the full bore Android phone costs too much for the third world person to afford.
Second, the cell phone service speed they can afford isn't fast enough to "google" without laggy gaps in some Android internal functions.
Third, you need local server farms working in the native language to make it all work right -- and that backup service level simply isn't there in many places.
Mozilla's Firefox seems to have been built to address these functional third world issues ... and some of its popularity stems from the nasty pitfalls it simply avoids falling into.
Firefox OS may seem somewhat simplistic to us, but everything it has works 100% reliably all the time in Calcutta and in Buenos Ares and in Timbuktu. And the phones are FAST and cheap to buy, with very affordable 3g type data plans to match up with the hardware.