censorship: as Lord Acton said 'Liberty consists in the division of power. Absolutism, in the concentration of power' (hat tip Elon Musk and OpenAI).
In the area of internet architecture, our current centralised approach has the unintended consequence of giving a handful of private entities enormous censorship powers over all of humanity.
The great hope in techno-philosophical circles is that innovations in cryptoeconomics / peer-to-peer / decentralisation will liberate us from the titanic centralising evil that currently exists.
(It is somewhat reassuring that many of the smartest in this space are motivated not by treasure from large centralising corporations but by higher-minded ideals and a yearning to help re-architect our systems for the betterment of all.)