You're completely correct! There are lots of email providers, and you can run a server yourself. Having previously done so myself, it's possible I might be keen

You're completely correct! There are lots of email providers, and you can run a server yourself. Having previously done so myself, it's possible I might be keenly aware of this fact. I found the fine article we are discussing to contain a great link explaining emergent centralization, including of email. Perhaps you had a different experience.