Just please make sure that whoever you talk to is actually authorized to legally donate the rights to the images. We've had several cases where someone at a company has donated a collection of images, but we later
had to
delete them all because the representative didn't actually control the rights. PETA and Cafe Magazine are 2 examples I remember off the top of
my
head.
Oh, ouch. Do we have writeups on said cases? What would constitute sufficient evidence?
Another well known example is the Ubisoft video games screenshots case.
Following an OTRS contact in December 2005 [1], Commons assumed Ubisoft allowed users to publish screenshots of their games under a free license ({{Attribution}}). ~750 files were uploaded in four years.
There have been three deletion requests, the first two inconclusive, and the third in November 2009 [2]. I contacted Ubisoft HQ at the beginning of 2010 with a precise report on the situation, seeking an agreement. They answered they never knew of this deal, and did not wish to publish anything under a free license. Files were deleted.
Also, if you are looking for successful cases in this field, we curate a gallery of free screenshots of commercial VG [3], as well as a (sometimes updated) summarized list of successful agreements regarding video games companies [4]
[1] https://commons.wikimedia.org/wiki/User:Avatar/Ubisoft/OTRS_thread [2] < https://commons.wikimedia.org/wiki/Commons:Deletion_requests/Template:Attrib...
[3] < https://commons.wikimedia.org/wiki/Historical_and_commercial_video_games%3E [4] < https://commons.wikimedia.org/wiki/User:Jean-Fr%C3%A9d%C3%A9ric/VG_screensho...