There is this 3D repository site and marketplace. The site is quite popular, but I won't mention it. I have raised problems with their site in that their users are making available for download 3D models that they don't have the license to. Most of these illegally uploaded models made available for download, as far as I can tell, are being made available only for personal use. However people need permission and a license just to display the 3D assets belonging to someone else. There are users who are ripping large amounts of content from commercial games and making it available for download.
I've already complained to other sites that they have users who are selling commercial assets from games, and have been doing so for a long time, and haven't so much as lifted a finger to ensure that their users aren't violating copyright licenses. Edit: To be clear, some sites have banned the user, but others have just removed the items.
Anyway, I have two questions. With this particular site, there are about three users that I'm aware right now (though doubtless there are many more) that need to be reported. However I've lost patience with continuing to send emails telling them their users are violating copyright laws (which they probably know already). Or, alternatively, should I contact the publishers of the games who own the property/game assets/models? Contacting all the publishers (the copyright holders) will be tedious for me, is there another way?
Also my second question is, can such a website, one of these marketplaces, or so-called repositories, that make models available both free and paid, be held liable for damages/compensation because of the negligence of not ensuring that the content uploaded onto their website is made available illegally? This particular site has had users upload models from commercial games since 2013, meaning they've been up for about 6 years.
Thank you. I don't really know what to do. And it isn't my responsibility either, but I know that there are a lot of people, both naive and worldly, who are either downloading these models and using them commercially, or even worse, paying for them and using them commercially, in which case they may be in for a nasty surprise down the track.