Things like Mastodon[0] and IPFS[1] are always worth checking out, if you want to get a sense of control over your data. With regards to the argument that these companies are so entrenched in our society that they are very difficult to remove, almost like barnacles, then I agree that something has to be done. The real problem exists when there is no other choice for people. For example, the default search engine on Android phones is most certainly Google and not DuckDuckGo. Another example of terrible monopolistic practice is that Android phones are so fragmented. It seems kind of odd that in order to have the most secure Android installation, that I also have to have the latest hardware. I find it very unfair that legacy devices are locked to a single Android install and can't upgrade properly. These things should be future proof and be able to respond to threat landscapes. I feel very uneasy communicating on legacy devices because there is the uneasy feeling that the device has been infected by either low-level attackers, or nation states.
[0] https://mastodon.social/about
[1] https://en.wikipedia.org/wiki/InterPlanetary_File_System