>A CEO who cares about interface _design_ is path to micromanaging and pain.
That's how Apple blew up into a trillion dollar company.
Also how countless other companies didn't.
...while being a painful place to work at, so not really disproving the point.
Plenty of other CEOs have thought the secret to Apple's success was micromanaging like Steve Jobs and been proved very wrong.
The best CEOs hire people smarter than them (in their respective disciplines) rather than assuming they always know best.
Plenty of successful companies that didn't have a great UI, and plenty of failures that did.