Sorry but the claim in this article is not correct (on Android) and is proposing a bad solution to the problem you're trying to solve. First, nobody is stoppin

Sorry but the claim in this article is not correct (on Android) and is proposing a bad solution to the problem you're trying to solve. First, nobody is stopping you from doing this. I just spent 30 seconds installing the first app I found on the Play store and 1 minute configuring my router, and now I have a static web server that I can hit from anywhere in the world. But the real issue is that it's the wrong way to build a personal web server for your phone. The right way to do this is to host a server in a datacenter and install an app or service that pushes content to that server. Other users can hit that server to see that data you push. Tons of advantages of doing it this way (reliability, battery life, capability, throughput, cost, security, support for multiple devices, support for multiple kinds of devices, ...) The reason that people don't build things like this isn't because they are evil or protecting their "walled gardens", it's just a bad design.