The prequels written by his son and Co are not as great but they are easier material to be converted into movie format which will attract more people to the sto

The prequels written by his son and Co are not as great but they are easier material to be converted into movie format which will attract more people to the story. Unfortunately the original books of Frank Herbert are really hard to convert into movie / TV format and that's why Dune never became as popular as star wars. Part of the reason is the inner narrative and attention to details like facial expressions. Actually what makes the books great is what's stopping them from becoming mainstream.