https://www.wired.com/story/jack-dorsey-help-you-create-own-twitter/

No one owns the internet. There’s no one stopping you from posting videos to your own web server, at least so long as you have the technical chops to set one up and the money to pay for hosting. But you’re at a disadvantage if you’re posting your video outside of YouTube or Facebook. And if Facebook or Twitter ban you from sharing it, will anyone ever find it?

But allowing everyone to post anything they want to these platforms isn’t a great idea either. The power and responsibility to handle issues from harassment to hate speech to revenge porn to foreign propaganda is concentrated in the hands of just a few companies.