Interesting to read of the planned Boorman adaptation. I had never heard of that before. A Beatles Lord of the Rings mash-up? Oh my!
In comparing the two directors above. I KNEW Jackson was destined for greatness as a technical filmmaker because I had seen his talent in prior films. Arcel, not so much...
and my comment comparing the two book series is based on the SIZE of both properties.
The Tolkien books are the best selling books of all time (150 million estimated for LOTR and 140.6 million estimated for the Hobbit) whereas the Dark Tower series has sold around 30 million books.