Meh, I think they've grown up some and see what Amazon has done. Building infrastructure services for customers adds long-term revenue. BMW doesn't make you buy fuel injectors from someone else.
Name one product in GCP (that had reached general release) that they have "extinguished".
Google custom search
Not part of GCP. Yes they have a history of shutting down free services but things in GCP don't get shut down, they are products, products people pay for.
These immediately come to mind. I'm sure there's more if I dig deeper.
* Theano -> TF
* The multitude of RSS readers -> Google Reader
* Severely undermined Firefox
* Usenet newsgroups -> Google Groups