> So, yeah, no technical limitation, but explaining to Jeff that you've spent a year retooling the build system to support node.js but not actually shipped any features yet might lead to limitations of another sort :-)

Indeed, and this is why I agree that it's pretty unlikely :).

During my stint at Amazon we barely had time to build the infrastructure we absolutely needed to launch features on the artificial deadlines imposed from somewhere in the stratosphere. How anyone had time to work on paying off technical debt or building new infrastructure is beyond me.