I think it's important to note that the creators of all three of those (Star Wars, LoTR and Harry Potter) did NOT set out to create a culture altering franchise. They were just people who had a story they wanted to tell, and when they told it people were drawn in and changed.
They never were trying to change the world! Just telling the story that was in their dreams.
Edit: In fact I think one of the reasons WHY the Prequels for Star Wars failed so bad is BECAUSE Lucas set out to TRY to make a new Star Wars Culture Changer Movie rather than just tell a story and let us love it or not!
He forgot Yoda's most famous words
Do or Do Not, there is no try.
They never were trying to change the world! Just telling the story that was in their dreams.
Edit: In fact I think one of the reasons WHY the Prequels for Star Wars failed so bad is BECAUSE Lucas set out to TRY to make a new Star Wars Culture Changer Movie rather than just tell a story and let us love it or not!
He forgot Yoda's most famous words
Do or Do Not, there is no try.