Here’s the cynical take. Studios make shows adapted from books not because they’re looking for good ideas, but because they’re looking for good investments. When a studio greenlights a show, they don’t know if they’ll make a return on that investment. But a book series comes with a pre-existing fanbase already disposed to watch whatever gets made. With Star Trek, that audience is trekkies. Adapting the books won’t make the show any more likely to succeed, so it’s probably not going to happen.