Well, they are also concerned about (A) Increasing their overhead, and (B) screwing up their uptime by introducing complexity (requiring even more investment in

Well, they are also concerned about (A) Increasing their overhead, and (B) screwing up their uptime by introducing complexity (requiring even more investment in Ops) and finally (C) slowing down their responsiveness (once again, requiring investment in Ops, and Hardware, and engineering to get back that speed) They really buy into the KISS principle over there, and it's worked well for them, but, the industry has moved forward, and it is possible to (affordably) add design and search flexibility without screwing up your uptime/responsive time.