One of the traps that befalls bottle neck cartridges. is....

Once they are introduced, people quickly figure out that the can remove the bottle neck and increase the caliber of the bullet.

Consider, after the 7.63 cal. Luger was introduced... it was quickly figured out that with minimal work you could have a 9mm.

.357 Sig was introduced, and Police Departments went to the .40 S&W in droves.

Why buy a .25 NAA, when I can have the same cartridge casse in .32.ACP, etc.,etc,,