There's a crew like that for apple trees in Glasgow! They rack up boxes and boxes from all around the city. Then they run events where you can press apples, and all the fresh juice gets given away.
Though I guess some of you here would say supporting such people with public property is a bad idea. Let's give the fruit to a guy with an online fruit tree map and a car instead.
When I was a child we would go on trips to pick mushrooms and fruit with family. As I grew older more often there was less and less or nothing left to pick in accessible places. Locals know a "secret place" (not really) but then someone puts it up online for internet points and whoosh.
Not a problem for us, we didn't really need them (middle class), it was far enough away of the town that it does not hurt a random hungry person, we could just drive around intil we find another place (was getting more and more difficult already 15 years ago). But not everyone is as lucky