An interesting thread.
I think I know the answer, but I'll ask anyway. Do MRT or SAR do any kind of after rescue follow up with the person or people they rescue, to help educate the rescuees in regards to the various dangers associated with outdoor activities and how best to plan and prepare to avoid them?
While you might struggle to find a workable method of getting genuine numpties to pay / reimburse teams for having to rescue them, it might be possible to recover some of the costs incurred by requiring the clueless and cankled to pay attend an after rescue education session? Obviously there would be a cost associated with any awareness course on top of the cost of the original rescue and it would require people to give up more of their spare time to provide the education, so it might actually be a bloody stupid idea.
But other than grabbing the rescued in a vice like grip and 'encouraging' them to make a donation to one or all of the various rescue services, without some kind of mandatory requirement for the rescuee to do the right thing, I very much doubt many of the hapless and halfwitted would even think of chipping a few bob their rescuers way, as rescue, like tap water and mains electricity is something that just happen, perhaps by magic.
Having said all of the above, I have acted like a proper numpty myself, on several occasions while out and about and have only realised the extent of my unintentional stupidity when later recounting my adventures to friends and the tales being meet with blank stares, much shaking of heads and suggestions that I may have acted like a complete tool.
So while I may roll my eyes at tales of unprepared idiots needing to be rescued, I do so knowing I have been an unprepared idiot myself, but managed to get away with it.
We live and learn... or just keep making the same mistakes until, someone comes and puts us out of our misery