Obviously, you have never had a masterful sandwich.
I'd say there's two types of software - better experience and novel functionality. You can in be a competitive business and win by offering superior service/design or go into non-competitive markets and offering functionality you can't get anywhere else.
Personally I prefer the noval functionality, being an engineering type, and slide a little on the design, but there's equally as much money in going the artistic route.
There's great technical risk in the functionality route, but there's great market risk in going the artistic route. Steve Blank talks about this in his writings.
The Lean Startup movement is about this market risk. To get a handle on technical risk you'd be better off listening to Elon Musk.
That said, an appreciation for the arts most certainly affects one's eye for design and taste. It is the difference between a good looking/feeling app and a great one. So much can and should be borrowed from the arts to build products, but perhaps such a loose definition of "artist" is unhelpful.