What is your definition of Successful? And that still doesn't answer my question

CoD has been sold to millions. More than Destiny. CoD is also cheaper and much more fun, in my opinion at least. Borderlands never played but friends love it apparently so actually can't say myself. And to answer ur question, people are complaining due to the overpricing of The Taken King.

It's the same content as the base game and if you don't like it stop bitching and don't get it