Accatone: ZOOM is not the publisher of the game, so I don't think there will be any removal. According to ZOOM, GOG is using their version of the game, which possibly means that ZOOM had made necessary changes to Killing Time so that it could work on today's computers. If that's right, I guess, GOG either needs to get permission (if needed) to use ZOOM's version or they should start creating their own version. I don't think it will be a big issue. ZOOM is talking more about ethics than anything else. And ethics is important, and if GOG has done something wrong, they should fix it. GOG removed ZOOM's name from their FCK website on ZOOM's request as GOG didn't get any permission of ZOOM for using their name. GOG later apologized about the mistake on Twitter.

kbnrylaec: And the GOG community moderator forbid us to use the word f*ck.
(Um, fsck is OK I think.)

SCPM: Twelve Ziggurat-published Data East games (and 3 bundles) are getting removed in 2 weeks:
https://www.gog.com/en/promo/retro_classix
https://www.gog.com/en/games?developers=data-east