It's not impossible; it's their centralised model that is. It's unthinkable to have private platforms on modern mainframes (data centers) instead of distributed, decentralised services where everyone holds a piece (DHT) or whatever they want (e.g. Nostr/Blossom), and is responsible for what they do.

It's impossible to imagine having democratic societies where four fat cats know everything about everyone and most people know almost nothing about them, where information, instead of being scattered everywhere for resilience, is concentrated in just a few hands.