[jdsully]

Windows tried this for a long time and literally no app was able to make it work properly. I spent years of my life making Excel have a sane rendering model that worked on device independent pixels and all that, but its just really hard for people not to think in raw pixels.

[kllrnohj]

And yet every Android app does it just fine :)

The real answer is just it's hard to bolt this on later, the UI toolkit needs to support it from the start