As for doing something with the cash they've made: security even at places like Avebury and Barbary Castle (see above) is notoriously difficult to enforce but I think you'll find, if you take the trouble to look into the situation at Rollright, that the path for disabled visitors is one case in point of a worthwhile use of 'cash' raised - Aubrey Burl, l who you fawningly refer to you in your profile, certainly seemed to think so when he opened it.
I filled the RT-books in after taking cash at the hut here - with other very reliable volunteers - over a 2 years period - day-in, day-out. Lived in the hut, slept here, wept here, shagged here. Know it better than most - RT members included. Now - instead of moaning (you're usual lifestyle), why not apply yourself where it's needed?