The Movie Makes the Star

From Hollywood Economics:

The audience makes a movie a hit and no amount of "star power" or marketing hype can alter that.  The real star is the movie.

From CNN:

"Superbad" was super good at the box office, proving that a no-name cast could hold its own amid A-list summer blockbusters.

From screenwriter William Goldman:

Nobody knows anything.

Make the best movies (or products) you are capable of making.  Be humble.  Listen to your audience.  If you are good and lucky, they might make you a star.