not sure if my points are relevant but i'll say this...
not many of us have the luxury of revisiting a certain location repeatedly or even have the opportunity to recce the place before the actual shoot. landscape photography would mean hours/days/weeks or even months of planning. someone who has access to a beautiful view/scene would have an advantage to know the best time to shoot, the best vantage point at that certain hour and the best day of the season to shoot.
having been to some countries myself, i'll say the scenery changes so drastically over the seasons that you'd have to be there a year to capture the beauty that resides in each location. if my memory serves me correctly, i might have stumbled across an article of someone shooting the exact same view over the 4 seasons at different time of the day. each of which has its own story to tell--white snow, falling leaves, blossoming flowers and blue skies at dawn, noon, dusk and night.
for someone to have created a masterpiece, i've one thought on this matter; either luck or patience. luck for someone with an eye to find that moment at the right place or simply wait at the right place for that right moment.