I agree, of course, I wan't suggesting anyone was preventing anyone from doing it.
In fact, I'd love to see relays run by existing free speech organizations, as it would be well within the mission of furthering this fundamental human right.
There's nothing stopping anyone from doing exactly that, many already do.
You're free to fire one up as well, no permission needed!
Discussion
It is one way to do it.
I think making relays easier to run, and having more of them is a better solution though. Having single large relays run by someone else makes points of failure that could be exploited. They would increase centralization.
If people are instead running their own relay, on their own server, desktop, or phone the network becomes more resilient, and harder to take down. Maximize decentralization.