Time, communication, all sorts of factors. I rescued two Z's and three monitors from a barn filled with goats and chickens. Outside, I was heart broken to see a destroyed Pac cab. (Did manage to save the Ms Pac board out of it, but couldn't find any of the supporting hardware.) Among the fatalities, I did spot several NeoGeo marked sides, a sit down, and a number of unidentified Atari stuff. Inside the barn, there were numerous Z's, a MK?, several SFII's, and other unidentifiable cabs. I must've tripped over and smashed about a dozen glass marquee's in the attic while I was selecting monitors to bring out. I did not have the heart to brush off the six inches of ---Cleveland steamer--- to see what I broke.
All of this ---Cleveland steamer--- was down in a sort of valley on a ranch. With my 4x4 truck I would have zero problem navigating the terrain. The problem was, since the time this op put all these cabs and monitors down there. He had landscaped the entire area around it. I would have no problem squishing any of the plant life, but I don't think he would have appreciated that. Given that the house was going to market, time was also of the essence, I didn't have time to contact anyone to assist.
So I was left with the barest of choices. Grab any PCB I could find, grab as many monitors I can, then haul it all about 50 yards up hill and load it into the truck. Carrying multiple 21" monitors up hill when you're mildly out of shape isn't the easiest of tasks, no matter how badly I might want them.
When I asked the op why he destroyed the cabs, he simply told me that he had absolutely no idea there was any sort of demand for those cabinets.

If I knew now what I knew twenty years ago, I would have stripped down every abandoned cab I ever came across in my life. I would have learned how to repair them later in my life. I've witnessed discarded cabs like in that the second to last photo. Buried in the snow. But I was too young, at the time, to know how to fix "broken" cabs. Even though I did have a place to store everything.