Google kills plenty of its consumer products if they don’t catch on in a big way (Reader, Google+); and it certainly “transitions” developer-targeted product/service startups into plain features (Firebase, WordLens, etc.) But this is neither—it’s BI software, for enterprise customers who build it deeply into their decision-making in the same way they build Google Analytics itself into their decision-making. These are not the people even Google wants to make mad. They’re precisely the people writing the checks which make up the majority of Google’s ad revenue!
They recently killed "Works with Nest" in favour of an Assistant-backed API that doesn't currently implement what Google acknowledges to be the most popular features of "Works with Nest".
Google are more than willing to kill developer-oriented as consumer-oriented.
Seriously, it seems like Looker is filling a specific hole in the Google Cloud offering.