Just running a webserver is dead simple. The only technical stumbling block would be forwarding the port from the router and a good chunk of internet users understand that.
You can't seriously say that and talk about port forwarding in the next sentence. Some people still think internet is the web is Google is Facebook. Some people (understandably) don't want to have something running 24/7. Most people won't be able to maintain their server, turning them into the biggest botnet ever created. I'd love the internet to be more decentralized, but this is just not reasonable.
People who are absolutely ignorant and incapable of learning aren't who I'm talking about. Most people can learn to change a turn signal bulb.
And no, running a static webserver will not cause vulnerabilities. Again, like in my prior comment, that only happens when you use some complex combination of webserver, database, and scripting language. A static webserver is significantly more secure than opening up a page in your browser with javascript enabled.
