Earlier quoted context omitted.
In effect, sure, but in implementation these aren’t comparable. Postal services usually come with monopolies and mandates that ISPs, telecoms and email servers usually don’t. USPS has a monopoly on first-class mail in the US and a Congressional mandate to deliver to every address.
> telecoms and email servers usually don’t Telecoms get a (local) monopoly on parts of the radio spectrum.
And they exist in competition with other telecoms who have different parts of the spectrum, wired service providers and Satellite service providers.
USPS has no direct competition for first-class mail and they have a monopoly over your mailbox (if you’re in the US).