Why don’t companies make more leaf blade shutter rangefinders?

I absolutely love my Olympus 35SP and a big part of it is because of the leaf blade shutters. They’re silent and I can get away with slower speeds than the conventional ones. It makes for a great street camera imo. Was wondering why companies like Leica, Pentax and Mint don’t make them for their modern film cameras. I only know Hassleblad does it.