This is true. Many departments are granted budget depending on their PhD student headcount (and where headcount doesn't determine budget it often determines pre

This is true. Many departments are granted budget depending on their PhD student headcount (and where headcount doesn't determine budget it often determines prestige). This leads to two things: 1) no consideration for the actual demand for PhD recipients; and 2) no impetus to actually get students out of the program. When I was at University of Chicago, their anthropology PhD program had an average completion time of eight years! Of course, many of those got opportunities for tenure-track employment. Still...