The problem is, is that it works, if you assume "working" means the software sellers get wealthy.
There's a reason that most waitstaff wear black. They should blend into the background, and not be what the folks at the table are talking about. In rare instances, restaurants exist, where the waitstaff is the service.
In software, though, you're being served by a waiter wearing a clown suit, screaming slogans at you, and serving you lukewarm, pre-chewed goo.
The “calm technology” book has an handful of advices, but one of the best example is the xbiff program. It switches picture when you have new mail on your local spool.