How are Dune, Blade Runner, Andromeda Strain, Gattaca, Pitch Black, The Arrival, Men In Black, Tron, The Matrix, The Fifth Element and hundreds of other sci-fi movies at all like a Western?
Dune: Okay, some movies are overblown costume affairs with random stuff thrown back and forth to seem artsy.
Blade Runner: Reluctant hero picks up the badge one more time to fight the evil gang and rescue the girl.
Andromeda Strain: Been too long since I saw it.
Gattaca: Didn't see it.
Pitch Black: Reluctant hero puts aside his dark, criminal past to rescue the stranded settlers from the restless natives.
The Arrival: Didn't see it.
Men in Black: Sherrif trains his new comic relief deputy in running bad guy out of town.
Tron: Law man comes to town to get rid of corrupt boss that runs the place.
The Matrix: Six men overturn the corrupt officials that run the town after a turncoat does terrible deed.
Fifth Element: Law man takes up the badge one more time to fight the evil gang and rescue the girl.
Star Trek:
Original Series: Really big Lewis and Clark expedition into hostile Indian territory. Many killed, several screwed.
Next Generation: Also an exploration expedition, but deeply in touch with its feminine side. Many feeling hurt, some light kissing.
Deep Space Nine: Town stays in place, Sherrif deals with the riff-raff that comes through.
Voyager: Expedition lost; the Wagon Train to Somewhere.
Enterprise: See Original Series, but with better fist fights.