Earlier quoted context omitted.
Search and Streetview is the only true Google-Product, everything else was copied or a buy from others.
Gmail started as an internal 20% project too, I think. The key elements of GCP were also developed in-house. But yeah, a lot of their good stuff started as an acquisition. (Disclosure: I was a Googler for a few years, joining through an adtech-related acquisition, and a Google intern one summer several years before that. But I haven't worked for Google in over five years.)
And GCP...well nothing new after Heroku and Amazon.
It just feels that google is always two steps behind from new inventions, then they try to half heartily implement it, or buy another corporation. Google should sell itself for free to Elon (Joke...but also not really)