The machine in question was aimed at all films but primarily at C41 for rapid minilab printing. AFAIK, it never worked well. And, customers wanted their film.
The Kodachrome patents have indeed expired, but even during their life, Kodak abandoned the patent due to lack of interest. This note is appended to the patent if you look at a scan of the original document on-line.
Both Fuji and Sakura have produced Kodachrome type films. I have many many slides taken using both materials and I have visited the processing plant in Tokyo. It used the same Kodachrome process as Kodak used, as those patents had expired. Fuji abandoned the process/film when they introduced Fujichrome for E6 in about 1990. These products are characterized by the same high stability as Kodachrome itself, but being natively produced sold for far less.
Since Kodachrome is a B&W film with a color process, it was easier for them to engineer. They abandoned the new films due to the higher difficulty coating them and the new patents among other things. They also began using the multilayer coating process with Kodak style couplers then.