I guess it's different also in that there is no encroachment by mid levels into General Surgery, unlike say General IM or General Peds which would more pressure that person to subspecialize. Hence a person could be quite safe in terms of "job security" by even just doing General Surgery only.
I've always wondered though whether 5 whole years of General Surgery is really that necessary (this was the case even when there were no workhour restrictions) vs. maybe 3 or 4 and then moving on to fellowship. With so much surgical knowledge, it seems like General Surgery is an old relic, just bc so much of it has fragmented into fellowships -- a little similar to IM, but a primary care doctor is necessary to coordinate and manage chronic conditions, and I don't think General Surgeons really do that as much, unless it's some one they have just recently operated on.