Just to extend Errvald’s post here:
DRMs are useless and a waste of resources. Crackers will always find a way to break it and remove it.
Just take the videogame-industry’s attempts at DRM for example. Even always-on games like SimCity 2013 got their cracks later on (before the offline mode was introduced).
While marketplace assets are not in the scope of major release groups, there are enough smaller people which will take their take on these assets if they come with DRM.
It’s bad that asset creators are the ones suffering the most in this case, which is just sad, but there isn’t much you can do and invading the privacy of the customers will cause a backslash.