It’s an interesting question. From a thematic perspective you can certainly see how Foundation inspired Star Wars but Asimov also mentioned that the main concepts of the Foundation series also borrow from actual ancient history.
These main ideas don’t dictate a specific visual and scripts don’t tend to be visually descriptive which leaves the director, production designer and concept artist to come up with something interesting.
It’s always a challenge as more and more sci-fi films are being made and creating a unique visual signature becomes harder but there are still plenty of interesting visual ideas to come up with unique visuals. One of them being proposed was to use the Apple sleek design and try to carry it in some of the ship looks. Another was to give the Anacreons a very unique tribal look loosely based on the Polynesian designs. There was also a very specific architectural direction for some of the environments.