I think App Engine was really ahead of its time in showing how simple cloud deployments can be. It had a similar ease of use as setting up a YouTube account. For that reason, a lot of people thought of it as a toy, which was kind of unfair because companies like Niantic were able to build global products on it. So a lot of Google Cloud afterward ended up being designed to be more "normal" like how Amazon is. Now people are seeing what normal gets them, so maybe it's going to be time for the Google way of doing things to finally shine. (Disclaimer: I'm a Google employee)