One important factor of the success of Facebook/YouTube/etc. is that you have an admin every 10k people. Let's say instead of Facebook we have million of people

One important factor of the success of Facebook/YouTube/etc. is that you have an admin every 10k people. Let's say instead of Facebook we have million of people hosting their websites. Then you'd need a lot more admins. A lot more of security issues. Facebook makes super easy for people to put content online and also interact between them. I wish setting up a server and securing a server to host your content would be as easy as creating a Facebook account.