pretty much all online games have very similar terms of service/service agreements so they can make changes like weapon patches, change playlists and add stuff like "wolves are prowling" without any legal mess cause if it counted as our game they would be changing our stuff after we bought it from them without permission difference is most other game devs don't try to abuse that trust to forcing dlc on their fanbase also http://www.gamesindustry.biz/articles/2013-02-17-bungies-destiny-the-developers-future-rests-on-this-game it was never advertised as a subscription game just a game that would continue to be supported for 10 years with new dlcs etc