Or maybe it's just a question of where the audiences are located?
Personally I pay Disney little money and have enjoyed their franchises, and am becoming really curious to see if the Shogun series can survive going beyond the book with a second season.
Sure, the Marvel and Star Wars spin offs have been hit and miss.
I read Shogun for fun in high school and the TV mini-series at that time already felt dated.
So it's been fun to revisit the story but reminded me how much I wanted to see the battle just beyond the end of the book.