This is correct. My current collectables (C&R and antique) are all capable of being fired, but I almost never do due to their value and risk of damaging them. Many are over 100 years old and there's a decent enough chance some irreplaceable part will break during use. I can also easily reduce their value by 1000s of dollars by doing something like this. I keep them because I enjoy their historical significance and the interesting mechanical solutions they embody, not for their ability to launch projectiles. When I'm ready to go to the nursing home, I'll sell them and get my money back or more.

A good percentage of the firearms out there are like this, which was my point for those not aware. Another good percentage are specialized for sporting use. Some are so inappropriate for combat that you'd be better off with a spear (e.g., if given the choice between a 50lb benchrest rifle and a spear, I'll take the spear).