I guess I don't buy this - there are systems which offer a lot of freedom and are still popular. Legos, Jeeps, Cooking. HTML, Minecraft, some real-world, softw

I guess I don't buy this - there are systems which offer a lot of freedom and are still popular. Legos, Jeeps, Cooking. HTML, Minecraft, some real-world, software options. "Usability" can be something you buy on top of the simple system, or it can be free, depending. These aren't diametrically opposite properties of systems.