> but then, for example, an oppressive government can (physically) take over a subversive website and punish everyone who accesses it. Already happens. Oppress

> but then, for example, an oppressive government can (physically) take over a subversive website and punish everyone who accesses it. Already happens. Oppressive governments already punish people for visiting "wrong" websites. They already censor internet. There are no technological solutions to coordination problems. Ultimately, no matter what you invent, it's politics that will decide how it's used and by whom.