Isn't Apple ProRes exactly this?
(I don't know codes well, this is an honest question.)
(I don't know codes well, this is an honest question.)
In comparison compression systems designed for playback, like AV1, can have more occasional key-frames (points that you can easily jump to, then work your way to other frames), and it is more ok to have compression artifacts, especially ones that are just going to look like motion blurs when played back.
So the compromises between features and size of the output stream are different.