That's exactly the problem! There's this idea that, if we automate the 80%, developers will do the last 20%, and we'll end up in a land of milk and honey, where mobile apps scale up their information density and rearrange their UIs to suit the high precision pointing devices and large screens that come with desktops and laptops.

In practice that never happens. Developers make their mobile app, use the automated tool to make it into 80% of a desktop app, hit the publish button and proudly advertise, "Hey, look, we have a desktop app now!"

Maybe it's fine for Apple and Google to ruin their desktop UIs like that. Maybe they don't care, or, more likely, they think that catering to the vast majority of users who are on mobile is an acceptable tradeoff for alienating the few of us who still prefer desktops as their primary computing device.

But why does Linux have to tread that same path?