This is great to see and is pretty much the same reason why we have initially started with Cloudron [1]. There are not many technical reasons why running your own apps on the server has to be harder than using a phone. There are tons of great apps already out there and from my perspective the biggest issue, as mentioned in the blog post, is the onboarding and ease of installation/maintenance of those apps including the server itself. The building blocks are all available but as a complete solution hard to use, unless one is a kind of a sysamdmin. This makes it just very exclusive. If you ever tried to setup your own email server there is so much crud work to be done and things to be learned. Learning about this is as such a great opportunity to understand the underlying technology and how things work together, but it is also a huge barrier.

1. https://cloudron.io