In the time Avatar has been out the only two other 'big' movies are Sherlock Holmes and The Chipmunks.... imagine how many other movies there would have been in Summer.
Star Trek and summer doesn't work for me and it never will.
Weren't TWOK and TSFS summer releases? I know for a fact TFF was because it came out in the midst of the biggest box-office summer in recent history what with BATMAN, INDY 3, HONEY I SHRUNK THE KIDS, GHOSTBUSTERS 2 and other megahits being released at almost exactly the same time. A good part of the reason why TFF flopped was because of horrible timing and squaring off against a sea of often-superior blockbusters with better scripts.