There are a lot more than 2-3 outlets some of which have completely different and less restrictive acceptable use policies. For example I understand Reddit is huge, although I don't use it myself.
And there's always email.
And there's always email.
And for those that just want to get their message out, well it's never been easier or cheaper to start a web site on any number of different hosting services. If they can't manage to gain an audience on their own site then their content is crap. The percentage of traffic on other sites is completely irrelevant; any user can jump to another site with literally a single click.
That's mostly a reason why Reddit (and others) should also be included in the list.
But even if we don't have all outlets, enforcing freedom of speech to say, the top-3 by users, is good enough for a start...
>And there's always email.
Yes, just like one is always free to think what they want inside their head, or tell it like it is, within their home.
I'm not talking about that, nor care about that "freedom".