I recently read a book on managing forests "A Landowners Guide to Harvesting Your Woods" and one of the salient points in the book is the fact that the majority of woodlands in the northeast are now privately held, (relatively) small parcels, that don't get harvested for a number of reasons.

1) Scarcity messaging over the last decades have created new property owners who see tree harvest as a moral outrage. 1a) Property owners aren't managing small private woodlots for harvestable lumber. 2) Harvesting small woodlots does not offer necessary economies of scale needed by harvesting operations, i.e., they're not going to invest the time to harvest < 20 acre plots.