Kodachrome film turn around was less than a week in Asian in the '50s and '60s. In fact, Fuji and Konica made Kodachrome work alike films and ran work alike processes all over SE Asia. And they sold products as far south as AU. The problem was NOT processing, it was rather the cost of the film and the cost of the processing.

Fuji charged $10 / roll for Kodachrome processing and also $10 / roll for the film. In some countries the processing was included in the price which was higher in those cases.

The dominant films in Asia were not E4 or E3. Outside of Kodachrome or Kodachrome type films, reversal films were virtually unknown. But every store sold negative films and made prints for you in 24 hours. They also sold processing kits and the formulas were published. Fuji, Konica and Oriental all used the same (old Agfa) process and produced unmasked color negatives which used a wash after the developer to aid in bringing up interimage effects. I have many rolls of that old film in my portfolio as well as the prints to go with them.

There is no mistake, B&W films and color films were ubiquitous virtually to the present day, and virtually from every company around the world. Oriental was quite big in the far east and SEA. Far larger than we might imagine. I have a 16x20 color print of a Japanese wedding given me by the head of Oriental. It is proudly displayed in my office. It was made on their new paper made to match Ektaprint 3 and Ektacolor 30 paper.