They're not part of a vast, Marvel-style universe, and neither is a classic. So why are the "Avatar" movies so successful?

Why are the 'Avatar' movies so massive? Their success seems to defy conventional logic

Source: space
Source Link: https://www.space.com/entertainment/space-movies-shows/why-are-the-avatar-movies-so-massive-their-success-seems-to-defy-conventional-logic