How device independent can code utimately get?

the #phonegap acquisition and passing to the #Apache Software Foundation.builds on the hope that it's stack of generalised APIs will eventually form standards that will run on any device and offer native support. But we've seen the close management of hardware and software used to good effect to deliver an above average user interaction experience. Will a phonegap of an HTML5 really ever beat that closely optimised experience. I've seen #Service2media building o/S and device specific components that work much more smoothly than plug-ins , APIs and Web Views although getting anear native app build capability that runs over multiple platforms is a tough challenge. I still think that if you want the very best experience then you'll always need to be ahead of the stsndards and work closely with the leading vendors. But I suppose we'll just have to wait and see