The truth is: there’s simply no substantial interest. If there was, we’d have better FOSS products with regard to usability. Let me intentionally overshoot to m

The truth is: there’s simply no substantial interest. If there was, we’d have better FOSS products with regard to usability. Let me intentionally overshoot to make a point: Developers are the ones building software. In a developers mindset, an interface is some sort of API, not a GUI. To them, it’s also more interesting to solve a technical problem than to build a great GUI. Designers (especially software and UX designers) are not valued to the same degree as developers/engineers in most organizations, including most FOSS projects. Apple is the only corporation that approached this differently from day one. My own experience as both a developer and designer show me this to be true. Especially the abrasive and uninterested responses I encountered every single time I was offering to contribute to a design overhaul. The developers did not want to deal with it at all. Imagine how a talented but not highly technical designer would experience this community interaction. All of the above is simply GUI-related. When it comes to interoperability between different projects, ideas and philosophies all too easily clash. And with no project leader to mediate and/or decide, it oftentimes leads nowhere or even sabotage. To illustrate this, you may want to read about the ongoing ZFS kernel integration saga. And that’s not even GUI-related. Given the current circumstances, mainstream adoption of any Linux/FOSS desktop will never happen.