For what it's worth, way back in 1977, I didn't perceive STAR WARS (the original movie) as a Star Trek ripoff. I remembered being thrilled that somebody was finally doing an old-fashioned Edgar Rice Burroughs type space fantasy right. I saw STAR WARS as being very much in the tradition of John Carter of Mars, Flash Gordon, etc., with a hefty dose of King Arthur thrown in.
The idea that it was inspired by Trek never crossed my mind . . ..