At a startup where I worked many years ago, they trained a model to take the image and screen size as the input and it would output the JPG compression level to

At a startup where I worked many years ago, they trained a model to take the image and screen size as the input and it would output the JPG compression level to use so that the image appears the same to people. It worked exceedingly well that a major software company offered to acquire the startup just for that. Alas, the founders were too ambitious/greedy and said no. It all burned down.