The diversity of Linux distributions is one of its strengths, but it can also be challenging for app and game development. Where do we need more standards? For example, package management, graphics APIs, or other aspects of the ecosystem? Would such increased standards encourage broader adoption of the Linux ecosystem by developers?
The difference is that most of your software is built for your distribution, the only exception being some proprietary shit that says it supports Linux, but in reality only supports Ubuntu. That’s my pet peeve just so that you know!
Distributions are not the problem. Most just package upstream libraries as-is (plus/minus some security patches). Hence why programs built for another distro will a lot of the time just run as is on a contemporary distro given the necessary dependencies are installed, perhaps with some patching of the library paths (plenty of packages in nixpkgs which just use precompiled deb packages as a source, as an extreme example because nixpkgs has a very different file layout).
Try a binary built for an old enough Ubuntu version on a new Ubuntu version however…