This is why I am increasingly of the hub and spoke method. You create content and host it on your own, but then reupload it to various sites that fill a need (youtube/vimeo/dailymotion for video, etc). Then not only is the content when removed from one (say youtube) still there in another place/form, but it can just be reuploaded.

Own your own content, but if you seek to spread a message you might want to use closed proprietary ecosystems as long as you aren't dependent on them.

For example, I was recently updating linkedin, and went to add Bruce Schneier, but he had a post that said he never checks or uses it and only links to his website from there. He still has a presence there though, and that really hit me how much these little walled gardens we let take over so much of our compute ecosystem are starting to look like prison, even for your standard copyleft hating SV hipster.

Of course Stallman would say don't even use them, and he makes some good points, but the problem we have now is even if you have a good message you can't reach the masses without going through some priestly gatekeeper of the government-corporate media power. So you have to use the system to beat the system.