My thoughts are

That ARFs are built exactly as we build them as far as the materials and parts are concerned. The reason that they are not offered is it boils down to dollars and cents, and marketing. OK I am making kits and sell them for a net profit of 25 dollars per unit. I find that I can go to a third world country and have that same kit assembled for a net profit ,when delieverd to the distributor and make 27.00, 2 dollars more. OK I am set up to make 100,000 units per year meaning 100,000 kits. OK I can increase my profits by $200,000 dollars if I can put them out in ARFS rather than kits HUMMMMMMMmm what will I do,, what will I do,,, Gee what a no Brain that is .I know we can move that many units per year, and I don't have the manufacturing capabilities to make more kits that that . So is really not much choice, the kit builders will not get them. The ARF assemblers will. this Might be over simplifying it but you get the picture.

The DIBO