I feel like, if you wanted to pick the film-photography version of Instagram, a better choice would be Polaroid: https://en.wikipedia.org/wiki/Polaroid_Corporation

Kodachrome was always preferred by serious photographers (at least until the Japanese film companies started muscling their way into the US in the mid-'80s), but Polaroid was the peoples' choice -- cheap, social and fun. People would crowd around a Polaroid exposure taken at a party, watching the image develop and commenting to each other on it. Nobody ever confused it for high quality film, but for the purposes it was put to, that didn't matter.