Flying is no more a privilege than walking is. Movement is instrumental to freedom; whether that movement be by land, air or water does not alter the fundamental right of free persons to move through the public space in one's own country, through all those countries willing to permit it, or through international space (including international waters, airspace, etc.). The means of doing so or not doing so is another matter. That is, growing wings (or not) neither enhances nor diminishes the fundamental right to movement through public spaces.