DSG has a multi faceted, regional marketing approach. Some stores have little to no fishing and other outdoors items, while others have either a large section or a dedicated "lodge". Don't forget they also own Field & Stream, which in essence acts as a stand alone lodge. And finally, in some markets it just doesn't make sense to dedicate valuable floor space to low volume low margin items, no matter the category. I don't wish sporting goods retailing on my worst enemy.
My local DSG has an ok fishing section, not awful, not great.