Here is an idea how I see this could be done techically. Show the logo on files that have an licence with an licencesetpl_short machine readable data class that contains the text "commercial use only". See [[commons:Commons:Machine-readable_data]] if you don´t have a clue of what I am writing about.

IMO there are two ways to this that are generic enough to be worth doing:

1. come up with a "non-free" logo and show that for all applicable licenses.
2. add machine-readable markup for the copyright status icon.

I would go with the first if we can come up with a good icon - trying to show some random user-provided image usually does not end well.

CC-ing Pau for thoughts.

Mass-removing the Multimedia tag from MediaViewer tasks, as this is now being worked on by the Reading department, not Editing's Multimedia team.