Upon hearing this, the astute listener will realize just how much George Lucas lifted from this to build the Star Wars story lines.
Aside from various themes common to storytelling form time immemorial, I don't really see what you're talking about.
On a related note, I recently watched the Dam Busters. I was shocked to see the origins of the death star trench run in an old b&w WWII movie.
The whole point of Dune was the vulnerability of the empire to a single resource; spice. Similar to the [our] real world's relationship with oil.
I've read Dune many times. But only watched SW once or twice. I didn't "see" Dune, I was thinking of the old space opera stories - or something like Buck Rogers.