Money in pretty much all the other sports comes from media rights, "gate", logo paraphernalia and licensing.
Can this happen to shotgun shooting sports? Never say never, example; America's Cup Sailing. Dramatically different sport from the J or 12 meter boats of the past, and far less interesting to me personally. However the video coverage/ production of the present catamaran races seems to present the pace and excitement media and the public requires.
Media seems to have an insatiable appetite for sports and my guess is "Make or Break" is the closest thing we now have that provides content "mass" media would be interested in.