The web by its nature is decentralised, however platforms often try to centralise it. Paul Ford discusses the benefits of setting up your own server and the lessons one is able to learn through the process.
Then I look at Raspberry Pi Zeros with Wi-Fi built in and I keep thinking, what would it take to just have a little web server that was only for three or four people, at home? Instead of borrowing computer time from other people I could just buy a $10 computer the size of a stick of gum. Which next year could be a $7 computer, and eventually a $1 computer. It could run a Dropbox-alike, something like OwnCloud. It’s easy in theory but kind of a pain in practice.I’d need to know how to open ports on my home router.I’d need to be able to get the headless device onto WiFi.I’d need a place to plug it in, plugs are hard to come by.It needs to physically be somewhere.It would need a case.You need to buy an SD card with Linux on it.And on and on.The world doesn’t want us to run web servers at home. But I do. I really think we should run web servers from gumstick computers at home. (Source)
This is a topic that Dave Winer also touches upon.