I finally figured it out. I think.
We have long shopped at cut-your-own-tree places, for the dual reason of family adventure and tradition when the boys were young, and because we put ours up very late (I would go later still), and the cut trees in the lots are picked over at that point.
Most of the trees at cut-your-own are quite dense, with little room to put ornaments which depend from branches rather than drape the exterior. They are for those people who have ribbon, garland, lights, and some theme of ornaments, all on the outside. Owls are big this year, I gather. They are trees for beauty, and more purely decorative.
Our ornaments do not have a theme, unless "family history" counts. Odd, even unattractive ornaments have been acquired over the years, made as children's crafts or given by friends and relatives. A few are carried over from our own childhood. More ornaments have stories than I am interested in at this point. My wife cares more, and remembers.
I couldn't understand why so many people who just have to be similar to us, because here they are on the same tree farm mailing list, getting up early on the first available day to traipse all over fields in Weare to compare trees, could all be the sort of persons who bought those other trees with hardly any room for ornaments. Not until this year, just an hour ago, did I piece together that this is where one shops for boutique trees if one is going to do that Martha Stewart sort of tree. The cut trees on the lots all have space for ornaments. Those are family trees, like ours. We are the unusual ones at the boutique tree place.