Why the movies are all the same? Tron as same as Avatar...?

A guy with an average life who's found to have somethin special gets
the chance to enter a different world who has never dreamed of. The
world is ruled by a dictatorial king or something, and there would be
also found a few good people and must have a brave chick. Repetitive
series of actions which the good does a move after saying it's the
time, the bad steals somethin, the good goes for it, they battle and
battle and battle up until the final battle where the strongest bad
character comes back and eventually the good survives with a gf after
beating the bad with a help of a friend and/or a natural disaster.

The concept would be pretty much the same too, the wisdom of choices,
determination, perfection, dreaming of other worlds and existing,
rethinking of existence of God and philosophy, or not to think at just
get your self hypnotized for the love of sharing their dream, which
you get nothing of but being hypnotized.
This is not just about Tron and Avatar, many many other movies 'e.g.
LOTR' are pretty similar in a way that forced me to say that's it. The
teams behind those movies have INCREDIBLE techniques; no doubt. But
why wasting it on the same IDEA? Does the media still think we're
naive as 5 yr old! Isn't it the time for a story developement?

Wanna know your point of views about what the concepts that media
sells, what you accept and what you leave. And the movies stratigies,
aren't you guys bored of them yet?