It's a combination of factors that IMHO, speaks to a general view, not just mall/dept store example.  However, the last time I walked a mall, there were multiple jewelry, clothing and shoe stores marketed to women.  That's not to say it's one-sided and there aren't stores marketed to men, but my perception is that there is more "variety" in female clothes and accessories to tap into.

Male, real-world items you can easily get away with several basic items and morphs/textures to accomplish the minute changes between styles.  Most guys that I know/see wear:  T-Shirt or Polo-style work shirt.  Jeans, Pants or Cargo shorts.  Probably the greatest variety of menswear is shoes/boots.  That's not all there is and you can do business suits, tuxedos and so on but for general, everyday wear there is not a huge amount of variety for men.

That, I think, speaks to how men shop.  This might be lame but I have a closet full of T-Shirts, some black polos, of course some long-sleves but basically they all are the same within their own category.  I have cargo shorts, jeans and some pants but they are basically all the same.  IMHO, there just is not a lot to do with that in terms of contemporary guy stuff.

Yes, if you tap into historical clothing and armor and sci-fi garb, there is a wealth of things to do, partially because you aren't as restrained to the here and now.

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