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.
I remember the glory days of them in the 70s and 80s.
There would be the novelization. Then the YA novelization. Then the photostory. Then the photobook. And then the audio storybook of the movie (on an LP) with a book.
Terminator has an American novelization and a British novelization. Written by separate authors.
It used to be routine for me to see the movie and get the novelization. If only I’d watched more movies but I was never a big movie goer.