But it's really not the same. Harry Potter was an obvious thing to make, the books were overly popular. J. K. Rowling was the first author to become a millionaire through a book series. The movies were an obvious step on the path of developing the story. The movies started coming out while the series was being completed.
LotR has long had a fanbase as well. It was another obvious thing to adapt to a movie.
The MCU routinely makes huge changes to comic book plots. They aren't the same stories.
Drizzt isn't super well known. It is not an obvious story to develop into a movie. The people who read the books would probably not care much for a direct translation from book series into movie series.
They're not going to remake a pre-made D&D adventure or FR book. That's not the thing most people would watch, IMHO. People who see a D&D movie coming out in theaters might be intrigued and see it, but if it's called something like, "Drizzt Do'Urden and the Crystal Shard" they would probably never go see it.