why o why

Hi List, I was wondering why this documentation submition process is overly complex...why don t we we use some wiki like tikiwiki or media wiki (of webopedia fame) to manage documents ...why I am required to submit docs in docbook xml format ....and check into cvs ....then built it .....,most wiki system have have built in work flow, revision mechanism, doc conversion to pdf and tons of other stuff etc ...........what is the requirement or need for such complexity ... Regards, Gaurav