They did that 10 years ago. Right around the time they added the video stuff. Didn’t work out. https://www.rockpapershotgun.com/steam-stepping-back-from-selling-films
Around 50 are still available if you know how to look for them: https://store.steampowered.com/search/?sort_by=Released_DESC&category1=992
Watch Kung Fury if you want to test it. I loved the cheese: https://store.steampowered.com/app/374570/Kung_Fury/
Yeah, and the one on Amazon is broken for years and no one cares.
There is: https://mycroftproject.com/
There you can just about anything to Firefox’s search providers.