The way this has worked in the past (again iirc) with other companies is that the registrar wholesale migrated their names to another provider who purchased them at a discount.
I've never been through the process personally, but given the quantity of registrars that are going into and out of business from time to time, I'm sure it's a process that's been pretty well standardized.
The worst part is that I was "in contact" with the owner via Twitter, and he assured me that he would totally look into things at some point in the near future..
Any company can close a service (or go out of business and close all its service), and if a service fails to make a profit, eventually the company will almost certainly do so, one way or the other.
The only reason Google has a high count of such services is because Google went through a period where it started lots of services (and, also, because its remixed and rebranded a lot of services, so that more service names have gotten retired than actual services.) There's no strong reason to think that the actual risk -- particularly with paid services -- is particularly high with Google.
This does seem entirely like a whimsical side project for Google. If you want a reliable domain registrar, find one that doesn't do anything else.
Seems pretty logical to me considering they have a very popular email and cloud business that requires you to have a domain.
They're in the domain business now, and I don't think they're going to drop out any time soon.
http://socialmediatoday.com/jordanv/2264086/google-sunsets-w...
At this point they create and destroy products on a whim. They have 900 products so who cares if a million users get pissed.
Like Google Play Music All Access or any number of modern Google Things, this is something they're doing because "what if we don't", not because they have anything special to provide.