"Batteries Not Included.
It’s a cute little 80s movie about some alien robots who took up residence in this old apartment complex and when the residents are threatened with eviction so the place could be torn down, the robots help the tenants and the tenants help the robot aliens. Anyways, I enjoyed it."
Just because it has a good rating and Oscar worthy does not make it a popular movie. "The Hurt Locker" has a 7.5 on IMDB as well, and won the Best Picture Oscar in 2009 but only grossed $14,700,000 at the box office. Not exactly a hit movie. Check out others here: https://www.goliath.com/movies/the-lowest-grossing-best-picture-oscar-winners-of
-all-time/
Well, I haven't heard of most of these and partly grew up in the era. So maybe most were not well advertised or quickly forgotten or even came out with big well-known blockbusters that eclipsed them.