Did you miss your appointment for therapy this week? You have medication you didn't take enough of, or a little too much of? There is no "need" for any rifles outside of defense of life and liberty. You can go anywhere and buy a steak. If you are competing with a rifle then there is a need for the best. Being a free market if you want to make it worth your effort and off-set your cost to create, you advertise - you know, marketing. Since we are a free nation and can hunt for game of all sorts all across the fruited plain, we look to the advancements in cartridges (most originate in competition) and use them.
Another thing to consider, a big percentage of shooters here do focus and think about our boys in arms. A lot of us spent time in Iraq or Viet Nam or Panama or some other shat hole and now a lot of us have Sons and Daughters that have taken the oath.