There's another option not listed that many have stated as their plan. That is "not now, maybe later". A lot of people don't want to pay ADM or possibly even MSRP, don't want to deal with first year issues, want to see different options, or just think they will be better positioned financial a couple of years from now.
For me personally, I have other financial obligations I want to deal with first, hoping to see better options, and perhaps most importantly, I've only had my truck just under 2 years and have several mods I want to get my money's worth from.