Most of these remote areas have a very limited population and an even more limited tax base to do these things gratis. If you are going to do these high adventure activities in remote areas, buy some damn supplemental insurance or have your own rescue team standing by.
No kidding. I paid $750 for literally a 2 mile ride several years ago.
Right on. If I were to be rescued from some predicament, I would offer money to those who helped me. Even the Titanic survivors put money in a kitty for the crew of the Carpathia.