Update principles.md

Author: Madis0

principles.md

@@ -26,3 +26,10 @@ Some facts about Fabric that can make you reconsider using (Neo)Forge...
 * **Fabric is easy** - many launchers are supported, and the [installers are accessible right from the homepage](https://fabricmc.net/use/installer/)
 
 Looking for alternative mods to those you've been used to in (Neo)Forge? [Check this list out!](https://gist.github.com/TrueCP6/4853f15015b210fd3b1e210e9e485f83#file-forge-to-fabric-ports-md)
+
+### Why is Fabulously Optimized not a client?
+
+- Explicit permission is needed from the mod authors to use their mods in a client
+- The authors of each mod would receive no benefits by being included, unless ads or similar are introduced
+- Less flexibility in mods that could be included at all
+- The client would need to be coded and maintained to keep it up to date