it's really dependent on how you're defining general surgery. the majority of practicing general surgeons in metropolitan areas are actually trauma surgeons. without equivocation, trauma surgeons are certainly the most "general" surgeons practicing. they perform the normal bread and butter GI, endo, breast, vascular, even transplant but get to work in the chest, neck, pelvis and more in trauma cases. a good number of trauma surgeons are academic staff, but many exist in non-academic positions at level II trauma centers. these individuals can split time for a private practice as well, but as far as independent private practices, you need to specialize in some area of general surgery to find your niche.