I notice the cartridge OAL is same as the 9mm (1.169").
Something like this could conceivably enable a small pistol like the P365 or Glock 43, or similar to accommodate a 15-round staggered magazine without any magazine extending floorplates.
I doubt it will get too far though. Seems the 9mm is deeply entrenched and well supported.
The right guy writes it up and recommends it and it'll get noticed.
Remember hearing, "No 6.5mm will ever make it in America"?