you speak with logic but you are neglecting emotion. being pleasant and catering speaks to emotion. spending money is tied to emotion much of the time.

as men we normally dont face the customer/public although we may be the one doing the labor. men tend to be more critical and skeptical of one another. but men and willing to relax certain boundaries and standards when it comes to women. 

shrewd businessmen have mastered this concept, "put your best face forward" aka a woman.