And all of 10 people would have watched it. IP is for name recognition more than anything else. What percentage of people who watched the Peter Jackson trilogy actually read a book from the trilogy? I'd bet way less than 50%.
Jackson didn't adhere 100% to the source material either. There are length lists, including many substantial non-narrative related changes, for[1] each[2] film[3].
[1]: https://tolkiengateway.net/wiki/The_Lord_of_the_Rings:_The_F...
[2]: https://tolkiengateway.net/wiki/The_Lord_of_the_Rings:_The_T...
[3]: https://tolkiengateway.net/wiki/The_Lord_of_the_Rings:_The_R...