Some times is just bad luck and timing.
But the Sony leaks from last year shows that the previous president was in a changing strategy: no more Andam Sandler support, no more expencive casting for wierd scripts (Aloha) and fucused Spider-man movies.
That is basically what Fox did in 2009-2010.
However, in the and it´s mostly luck. Unfortunately James Bond is the only big franchise they have. Sony´s competitors have many more and can output a stedly stream of big films every year.