I agree the price is what killed Kodachrome and similar processes. In the last years of it's existence Kodachrome was sold in Austria for 14 (cheap) to 22 (more common and mega expensive) similar prices in Germany, furthermore the processing took nearly two weeks because they closed their EU processing and the film had to be send to the US. The old Agfa process was certainly not great but it was the first modern color process and the Germans and Japanese had close ties (unfortunately not for a greater good) so it's no wonder that the japanese choose to use this process. Also matching a look to a certain product had often little to do with lack of reseach but with what the costumer wanted.