People should read your comment a few times to let it sink in.

But, iRobot, why should we care about efficiencies? Energy grows on trees.

I predict we are going to see many, many more ARM devices. And Apple is going to lead the way.

This is going to bother some people who like to write bloated, inefficient code. Their focus is on multi-core and concurrency. But to do simple things (retrieving text, images, audio, or video via http, sending/receiving email, etc), one does not need that much power.

The rise of ARM will create opportunity for a different set of programmers who are more efficiency-conscious.