The reality is that most people don't even know what a UX designer is-- so they get the designer, programmer, and biz guy in a room and mangle their way through it. The real problem is that there are not enough UX designers out there. UX is inherently multi-disciplinary. You have to have understand how business objectives interact with design interact with code. Our education system doesn't teach people to think holistically so most UX designers just stumbled into it on their own. Some come from the design side, others come from web-dev, but you can't fault them for trying.