You can only fix it by not going to the cinema. But if somebody legitimately says "I liked Transformers 1, 2 and 3 and I happily pay for 4 and 5" what you gonna do? You are not the taste police...
And sequels don't always work. Alice in Wonderland making over a billion at the BO had me go "WTF?" - now the studio wanted more of the cake and it backfires
http://www.boxofficemojo.com/showdow...id=alicevs.htm
But yeah, the money printing works in some cases (Marvel universe) and not so much in others (Terminator franchise)