You could consider that Alphabet buying Nest and them shutting down all service was in a way Google stopping operations on that.

But I believe that is mostly related to the unending list of services they have stopped. Code, Reader, or even APIs and libraries they stop without a single warning (cough cough angular v1.x).

Seriously, the list is big. https://en.wikipedia.org/wiki/Category:Discontinued_Google_s...