The Deadpool game got a Marvel license, which Activision chose to not renew. As a result, all online/digital version of the game were deleted on January 1, 2014. If you’d like to play it, it can be gotten on disks presumably made before the license expired.
It’s come out that D3Publishing got a Marvel license. When does it expire? Will the game suddenly cease to exist on January 1, 2015?
Just to clarify, taking down means you can no longer buy it online. if you already bought it online, you can continue to play it or even re-download it.
There’s a thread someone on Steam which lists all of the games that have been removed from Steam. There’s only one game listed (uncomfirmed) which was said to be removed someone’s library but I agree with your assessment of no new customers or anything unless it comes back
.