To my knowledge, latent image keeping can be improved by using some dopants in/on halides, and AFAIK it usually does not compromise other properties. Then, there would be no real reason not to use these technologies also in professional films to maximize latent image keeping. It's not granted that professionals, or people seeking for professional results, always could process films promptly or could keep them cool due to circumstances.
IMO, the biggest difference here between pro and consumer film are just tolerances; effects are quite same but consumer accepts bigger deviation from the standard. This applies also to keeping temperature before exposure.
Maybe someone more familiar to emulsion technology can comment. Correct me if I'm wrong.