Before air travel land ownership was from the center of the earth to the heavens. Then comes mineral rights and what is considered legal airspace. I don't remember what that elevation is, but my recollection is there is a number. Prior to this ruling those land owners could not stop someone from using a helicopter to access public land locked behind theirs. I'm guessing that now with this ruling there will be a change in how high the landowner controls above his property in certain locations.
Road access to land locked public land is going to be a separate issue. I think.