Early color cinema films were slap-dash processes. Most of the companies produced only a handful of examples. Even Technicolor let its quality control slip so much in the early 1930's that it hurt its brand. From what I understand it survived because a millionaire, Josh Whitney, underwrote the effort at producing a three-strip camera. Very few companies could equal the precision and high standards of EK--none ever surpassed EK. The fact is that most of them depended on EK manufactured materials. I don't know of any that made their own clear plastic base or coated their film.
The re-release market never had any money. Mostly it was just a bunch of itinerant projectionists traveling from town to town showing old prints on a bed sheet.