Commercial Development Policies have existed for the Victorian National Parks System since the 70's. Various governments have either promoted them or put them on the backburner. There are a few existing developments allready:
Mt Buffalo Chalet - still trying to get an operator for that one, its just decaying away, unused for 3 or 4 years!!
Seal Rocks - Phillip Island Nature Reserve - currently a basket case.
They work well if done properly. Bay of Fires and Cradle Mountain in Tas have commercial cabins along walking tracks and campground cabins - along with NPS run camping areas. Usually aimed at high end $$ users.
Very common in the State's.
http://www.yosemitepark.com/lodging.aspxThe balancing act is to offer a range of accomodation, and have them non-competing
in both market and location.
Hopefully, the ability to offer 99 year leases will get someone interested in Mt Buffalo Chalet. A previous potential operator walked away from a deal because only 25 or 30 year leases (not shure which) were available.