Per capita number of airplanes and helicopters in Alaska is many many times more than the rest of US. Because most of Alaska (more than 90%) is not reachable by roads, these are the most common options (other than boats if you are off the water) both for business as well as tourism. I tried counting the number of non-government non-military airports in Alaska in Wikipedia (including seasonal airports and seaplane ports). I gave up after counting to 400!! Just to understand how akin these are to car parking lots, only 8 of them have control towers!!