[whatusername]

User Experience / Price / Design / Exclusivity / existing infrastructure / external pressure (see legal reqs, etc)

A product / service can create value in all of those areas.. some are either mutually exclusive or at least practically so.

To even use Apple as an example.. Great Operating system - unless you want a netbook. Or want to play games. Or create blu-ray disks.

Put it this way - I'm sure you can make a better hamburger than mcdonalds. But I'm sure Ray Croc made a whole lot more money than most of the people on HN ever will.