I feel like before Redbox went under, it was also a dumping ground for this sort of thing. For instance, that mid-budget Western "Rust" where Alec Baldwin killed the camerawoman on set felt like it was destined for this sort of distribution strategy. Who's clamoring to go out to the theater to see a Western with Alec Baldwin these days? But it might stand out among all the other slop when you're looking to turn your brain off on a Saturday night.
See also the rise of the "geezer-teasers," where a random 80s/90s action star signs up to appear in the first and last 10 minutes of a generic action movie filmed someplace inexpensive, most likely eastern Europe or southeast Asia. There were a lot of those. Perhaps my favorite, that I still want to watch someday, was Danny Trejo and Danny Glover in "Bad-Ass 2: Bad-Asses."
https://www.youtube.com/watch?v=aMtPzDMB2dg