Your assumption that all that is needed does explain some things. Almost none of that is required and indeed, most of it would make things worse. Running a web

Your assumption that all that is needed does explain some things. Almost none of that is required and indeed, most of it would make things worse. Running a webserver is as simple as "apt install nginx", forwarding ports 80/443 on your router and saving a index.html to the webroot directory. HTML and files in directories live forever. And there's no need for a domain, DNS, or especially an "application". Just drag and drop myphoto.jpg to ~/www/ in your GUI file manager and you're ready to send the link, http://my.ip.is.here/myphoto.jpg http://my.ip.is.here/myphoto.jpg to friends. And it'll last forever with no security worries. nginx remote exploits are once a decade, if that. Sure you might have to re-link if your IP changes but that's not a problem. Sure you site will be inaccessible sometimes if your computer is off, but you're not sharing files to friends during that time so it's fine. The requirements of business use cases just don't apply. It's not "serious".