You can filter by studio and use that information for smart collections/playlists.
That being said… Netflix, Amazon, Apple & Co. aren’t usually the studio that’s actually producing that content – they might be financially involved or “order” a certain movie (e.g. under exclusive license).
There’s a similar suggestion looking at that for streaming provider “produced” series, debating what role the big providers actually play (studio vs. network vs. distributor…).
