Why do some wealthy people wear the same clothes each day?

Everyone have their own unique style of dressing up , some people are fussy while some are easy going. I have noticed two well known WEALTHY men who wear the same clothes each day , Those two persons are Mark Zuckerberg and Steve Jobs.
While mark was doing one of his Q & A (question and answer interview) he was asked the question - Why do you always wear the same T-shirt?
His explanation was pretty simple , he doesn't spend time fussing about what to wear because that isn't important in his books so to speak. Instead his main focus is on the business and the millions of people he have to be serving and taking care of.
Steve Jobs was known to always have his signature look a black turtleneck shirt with blue jeans and pear of sneakers. My understanding from this research is that it shouldn't matter what a persons wears. Also i remember a quote which my little sister once text me " Don't live for compliments , instead live for accomplishment " .