[ghusbands]

The voice assistant stuff is fraught - phrases work for a while and then stop working, and you have to work out the new phrase they've chosen. Like, recently, "Walk to [X]" stopped working a majority of the time, so now I'm not sure what phrasing to use when I want it to show a walking route. Same goes for adding things to a calendar or starting a timer - it works until it doesn't. As with search, things just change so much that you just can't trust it.

Almost none of the other things you mention are likely long-term significant. Firebase is going to continue at low popularity until it vanishes. Waymo can't make much progress when the current zeitgeist is that everyone can produce self-driving cars. Drone delivery keeps getting tried by lots of companies and never delivers. Google Home is copying Amazon's (Alexa) success just as Android was copying Apple's (iPhone).

AI is the lone exception in what you mention - the sheer size and scope of their AI projects has been impressive. As with Google Translate, though, the output is now polluting the very data sources that they use, making future efforts harder.