Google has always had great tech - their problem is the product or the perseverance, conviction, and taste needed to make things people want.
https://aibusiness.com/companies/google-ceo-sundar-pichai-we...
I think we can be reasonably sure that search, Gmail, and some flavor of AI will live on, but other than that, Google apps are basically end-of-life at launch.
Agree there are lots of other contributing causes like culture, incentives, security, etc.
nothing changed...
[1] Ref: he mistakenly posted what was meant to be an internal memo, publicly on G+. He quickly took it down but of course The Internet Never Forgets https://gist.github.com/chitchcock/1281611