Did a little searching on that & I find that although the stumps are highly desired, there is such a limited market that no one wants to fool with it. Kind of limited to hobby woodworkers, turners, etc. Another article stated that most outfits don’t want to fool with a few trees. Costs to much to move equipment in etc.
Said they wanted large stands of trees. Not farmyard shade trees etc. To many foreign objects in the farm trees like wire, nails, scrap iron, etc. These objects explode the $1400-1500 blades and injure workers. I guess that is why some radical tree huggers spike trees that are being logged.
Lots of good articles on this. I find it amazing, the amount of information on any subject you can find on the internet. If a person only had the time! (I am also amazed at how little I know of this world! As always, I have way more questions than answers!)