I have been shooting in National Parks for years. The permit law was enacted about 15 years ago and the basics as I understand them are, you are free to do as you please as long as you not on a "commercial" endeavor. IOW you can shoot all you want for yourself, but the minute you start to conduct business or shoot for commercial production, you need a permit. The permit involves both a fee and paying for a park ranger or rangers to escort you and your group.
Isn't there something more to be said about the letter versus the intent of the 'law'. Isn't the goal to control location shoots/documentaries, involving groups of technicians, photograpers/cinematographers, models/actors, lighting setups, catering, motorhomes/tents for housing, oil or waste water spills, etc.. That I can understand, to prevent the destruction of habitat.
I don't understand it if someone makes (or happens to make) a great scenic image and can sell it, thereby potentially providing for free publicity. Or are we talking just about money, the root of all evil, IOW greed?
Bart