That's a fair point, I will concede that it's difficult. But a lot of the core things like the file manager (and certainly Unity) is within their control, and could be a lot better. I think that much more could also be done from a technical and cultural leadership perspective in this area. I would dearly love to chat with anyone from Ubuntu about this if they wanted to listen. I'm not a designer (not anymore) I'm a software developer (generally), but I still think that there's an opportunity for huge improvement even with the challenges you (correctly) point out.