Forgive my ignorance (and what may be interpreted as a somewhat snarky tone), but if two freaking musicians with chemistry training could invent this stuff by themselves in the 30s, why can't anyone figure out how to make small batches of it now? Sorry if I sound like I'm ranting. I know the Kodachrome horse has been beaten a lot, but I am genuinely curious.
Beating that horse again and again: it is not an issue of technology and competence but economics.
In the past 7 manufacturers aside of Kodak made such type of film.