when exactly did ubisoft create a good IP? rayman? (prince of Persia, assassin's creed--not good games). ok maybe I've met one die hard assassin's creed fan ever.

I wasn't aware personal anecdotes and preferences were treated as fact. I'm not a fan of Assassins Creed either but that doesn't change the fact that series is popular enough to have more games in its series than most, themed clothing, and a movie. Also there's Far Cry and Tom Clancy series as other popular IPs. You don't have to like them, but someone deemed them good enough to keep making them.

Let's not forget that this was initially an AMD optimised game, that alone was a turn-off for many people. The built-in biased benchmark alone caused a lot of fuss with fans of both vendors. Then, there's the delayed DX12 patch which was "buggy". Add everything else that's been mentioned and it was bound to sell "poorly". The one thing that they've done right is to continually patch this game.