Why does Dodge go cheap with their steel?

This is an issue pretty specific to Ram trucks apparently. After a quick google search it looks like Dodge never has done a great job of sealing the wheel well and salt is getting in behind the fender. It's a shame because I really like the looks of the Rams but that rust is a deal breaker. Ford and Chevy does rust in the same spot but not as quick or as bad as rams do.