As I know, EL is required anyhow when ur image is used in distribution.
However, I'm thinking if the company distributes their corporate calendar or wallpaper to their clients, and the stock image plays a minor role, maybe it is fine to use standard license? Anyone know?
Btw, if someone steals the image or uses the image without purchasing a corresponding license, can we sue directly the person instead of sending a DMCA takedown notice? If doing so, how much is the compensate we can get for a royalty-free image? Just curious, don't mean to be ruthless.