The best way I have found to get decision makers to go with the more
sustainable choice is to show them that choice in action, and let them talk with the person(s) in charge at that place.
Tonight I ran across a
video of someone doing just that. The subject is not
permaculture (it is focused on getting more
city dwellers to travel via bicycle). But I really like the process they are using.
I think such an approach could work with
permaculture, and many of the other subjects in the permies.com forums.