> There's no technical reason they can't, but practically, a central, easily discernible destination appeals to those looking to monetize their content.
That is very similar to what was mentioned up-thread:
> [..] we need to start by addressing the root cause of this concentration: Centralization is required to capture profit.
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> Email is a one-to-one (or few) channel vs broadcast. Completely different.
ActivityPub / Diaspora / Friendica were also mentioned; email was about interop between software and service providers.
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> The arguments about decentralization/federation remind me of the early days of the Net, wherein there was so much talk of democratization, but here we are (unfortunately).
Also mentioned up-thread:
> The idea of disintermediation was central to the emancipatory visions of the Internet, yet the landscape today is more mediated than ever before.