Apple Blows us Away with Smart Bezel Details

Can anyone comment on what is stopping Android handset makers from innovating like this?

It seems like the only thing they are able to focus on is bogging down the OS with a bunch of bloatware and fancy skins that detract from the built in functionality. My guess is that they don't want to put resources into something that is destined to become open-sourced, but any thoughts on this would be interesting to hear.