I use far too much Google stuff. I'm on GMail. I use Chrome. I am a Node developer which uses their V8 implementation of JavaScript. I hate it but I mostly use Google for search, habits die hard. It will be a huge pain to me if I have to fall back from using Google. I criticize them because I do use their products. When I stop, you can be pretty sure I will also stop writing about them.
The alternatives exist and I recommend using them. This is coming to you via Chrome and Android, but elsewhere I rely on Linux ans MacOS, as well as Firefox and increasingly text-based browsers. (I'm special, I know.)
Protonmail and DuckDuckGo are each quite good. I am divesting mysself of other digital services generally.
As for networks, technology, monopoly, and power, I'm seeing them as increasingly tightly interrelated. Look up Jules Dupuit and his work on rail fares (and classes) and bridge tolls, among others.
Why? Aren't Firefox and DuckDuckGo two straightforward alternatives you could use right now? Switching to both of those would reduce your dependency on Google and be relatively pain free transitions.