They were going to run out of material way too fast the way they did the movie. They condensed The Gunslinger, The Drawing of the Three, Wolves of the Calla, and Song of Susannah into ninety minutes. They could have done the rest of Drawing, but then that just leaves The Waste Lands, The Dark Tower, and an excessively long flashback with Wizard and Glass. They would have needed to just not adapt more book content in order to have more than a couple seasons of material.
They were going to run out of material way too fast the way they did the movie. They condensed The Gunslinger, The Drawing of the Three, Wolves of the Calla, and Song of Susannah into ninety minutes. They could have done the rest of Drawing, but then that just leaves The Waste Lands, The Dark Tower, and an excessively long flashback with Wizard and Glass. They would have needed to just not adapt more book content in order to have more than a couple seasons of material.