[rglullis]

Let's drop the requirement that the server is from a "official" .gov domain, wouldn't it be possible to be operated by some NGO-type entity?

Another possibility... couldn't this be operated by PBS, which would then have an extra audience and potentially create new ways to generate revenue?

[DeadSuperHero]

Technically, yes, that's totally doable. However, whatever NGO is operating the instance would still have to get buy-in from administrations and officials that this is the server to join. You'd still likely have contractual and service-level obligations.

But I'd imagine that it's probably less red-tape than a government entity self-hosting their own Fediverse infra.