Dev’s,
How about adding aggregation to the search bar in Plex? For instance, I search my library for Creed II; I don’t have it in my library, but Plex finds it on VUDU for $19.99, Amazon for $14.99, iTunes for $19.99, Google Play for $14.99. I click on the source of my choice, I authorize the purchase, it downloads and is added to my library.
Undoubtedly Plex could even generate revenue by becoming a partner with some of these vendors.