I'm shocked by how many liberals who really ought to know better are cheering for the deployment of corporate oligopolistic censorship at this scale. We're not talking about just kicking someone off Twitter... now we're talking about kicking them off supposedly neutral public cloud platforms.
This is a major escalation and honestly it's changing my mind a bit about the whole issue. I was a fence sitter before but now I'm siding with the libertarian crowd on this one, and I say this as someone who is nowhere near the alt-right politically.
We're going from what amounts to forum policing (though on huge scale quasi-public forums) to infrastructure level censorship. No longer can you just "go set up your own site." Even more significantly we are seeing an incredible amount of coordination between corporations on this, proving that competition and diversity in the marketplace is not sufficient to protect the openness of the Internet as a system.
Once again: liberals really should know better, especially any that care about net neutrality. This is a really extreme example of ISP traffic discrimination and it sets a precedent that this kind of thing is okay. A top level infrastructure provider blackballing a site for speech should be a third rail regardless of the content in question.
Censors always start with the least popular ideas and speakers. They do that for a reason: they want to gauge what they can get away with and they want to shift the Overton window toward increasing support for censorship. They know that few people will overtly stand up to defend Nazis, trolls, and blithering red faced demagogues, so that's where they start. Other popular targets in the past included pornographers, lewd writers and musicians, and religious blasphemers.
Two thoughts that ought to keep you up at night even if you are inclined to agree with these moves:
(1) What happens if/when the political winds shift and someone like Donald Trump or maybe someone even to the right of him ends up in control of these powers? Who gets silenced then? A power once created becomes a political entity that can easily be handed off.
(2) What happens if/when some liberal cause -- like a reboot of unionization and a new labor movement for example -- really threatens corporate and Wall St. profits at a large scale? Will Neo-unionists get this deplatformed and shadow banned now that it's been legitimized? Will anyone even notice?
Again... we are setting a precedent here that this is okay. You really all ought to know better. The reference metric for freedom of speech is the freedom enjoyed by the most offensive and least popular speakers: political fanatics, pornographers, demagogues, hate-mongers, etc. If they are free to speak then you are free to speak. If they're not then the process of clamp-down has started and you are next.
There's a reason the ACLU has in the past defended neo-Nazis and other unpopular speakers, and it's not because they support these speakers' messages. It's because you need a canary in the coal mine.
Edit:
The conspiracy nut devil that hangs out on my shoulder whispers that this combined with the abolition of net neutrality is a coordinated campaign. Use massively unpopular triggering demagogues to get the left to abandon its commitment to free speech while simultaneously using fallacious libertarian arguments to get the right to eliminate net neutrality. Put those together and you have a Great Firewall of America and enough public support from a broad enough subset of Americans to deploy it.
(The libertarian arguments against NN are fallacious because ISPs are government backed and sometimes even funded monopolies.)
The next ratcheting up would be for peering points to refuse to peer Internet traffic that they don't like, and abolition of net neutrality would allow that. That means Gab (or tomorrow moveon.org, who knows) couldn't even host at an indie hosting provider or overseas.
But that's crazy talk right?
If sites like Gab get banned from being hosted the next step for them will be to move to decentralized platforms or Tor. If the above is true I predict that this combined with the words or deeds of a few nutjobs will be used to start convincing both liberals and libertarian-minded conservatives to start supporting bans on un-escrowed encryption as well as ISP and cloud provider efforts to block "horizontal" network traffic. This is how you'll be convinced to support a ban on P2P protocols and privacy technologies.