While I don’t disagree the 9x23 should have been better received the problem was in the 90’s there were a ton of cartridges trying to make a name. With the 40 being the established hotness yjen and Probably the other two more popular new kids (as far as adopted by LE) 357 Sig (USSS, NMSP, VA, TN NC DE and other states) and several years later the 45 GAP (SC, GA, FL)The original 9x23 Winchester was/is the answer to the question, "Where is the modern iteration of the .38 Super?" John Moses Browning would be smiling if he could see the 9x23 Winchester cartridge.
It should have taken off. In a 7" slide/barrel configuration, I can see the cartridge having sufficient power for hunting Deer/Black Bear, even larger Javelina. (Anything under 350 pounds would be best addressed with a 147-grain JSP.)
What's not to like?
And the others (9x23, 400 Corbon 38 TJ 356 TSW and that one from Dillion that eluded me just to name a few) wete too little to late