If so, the solution may well be making more private speech more public, rather than making more public speech more private. Imagine if every email provider had an option to "publicize" next to the ability to star an email or email thread. It's the private, anti-free speech stuff that would be interesting to see up close. And I'm just talking about email communications.
That might take a while for the necessary changes to cultural norms to set in, and I'd think it would get a bit spicy in the meantime.
"It's not what you say, but who you say it to" - that notion hasn't yet become normative as pre-crime and post-crime justice blend.
"Thou shalt not bear false witness against thy neighbour" in the tradecraft of oppression, that idea must be reversed.
Freedom-of-speech should not be taken for granted, likewise freedom-of-association. Use it or lose it.