I said "they at least take part of this complexity away." They don't solve all of the problems, but they do solve two important ones. 1. The runtime is the sam

I said "they at least take part of this complexity away." They don't solve all of the problems, but they do solve two important ones. 1. The runtime is the same on all platform 2. They build installable binary packages for you So only 2 is about distribution , and it is not a trivial task. If you have to make Installer for windows, DMG for macos and let's say deb and rpm for Linux. I have a small opensource tool that I make, and I would say that building the installer for all the platforms have taken probably 20% of all the development time, and if you count in also the desktop integration code( like Explorer context menu for Windows) it's way more.