People who let rare cars rot.

I wonder how many of those people realize the cost to get them back on the road goes up with time. I have things go wrong with my old parked car in a garage! Image the cost difference between a semi solid car and a rotted frame from being parked in the grass. If they truly cared about the car they would let someone fix it. While i'm wondering, would they sell if they could have a hand in the resto or were promised a visit and ride when running?