I remember reading them back in the early 90s (Robin Hood: Prince of Thieves, Far and Away, Back to the Future). They don’t seem to be a thing anymore (or am I just not noticing them).
As an aside I remember liking them but I was a preteen at the time so maybe they were terrible and I just liked the movies.
Something I often wish for is a well-written novelisation of Horizon: Zero Dawn, complete with dialogue from the game, working with the studio to ensure the main and side quests are in a suitable order. It’s a brilliant story, loads of lore about the past and present, great characters. But loads of people will never experience it because it’s a game - like my mum, who’s hopeless with consoles. But she loves The Wheel of Time, GoT, Star Wars etc., so a novelisation of Horizon: Zero Dawn would be right up her street. I’d explain the story to her in my own words, but it wouldn’t hit nearly as hard as playing it did.