Even if you don't know how to setup your own mailserver, you can still decide to pay for your email (protonmail, fastmail, etc.) to have it managed by a smaller

Even if you don't know how to setup your own mailserver, you can still decide to pay for your email (protonmail, fastmail, etc.) to have it managed by a smaller company who makes money directly from their users hence have an incentive to treat them well. Also not putting all your eggs in one bag is a good idea. The real problem is that most users don't understand why they should pay for a service that Google provides them for free.