Former AMD employee here (2007-2012) AMD 'dropped the ball' BADLY when (2012) then-VP Ben Bar-Haim decided to do a software purge, and focused on retaining the over-bureaucratic folks of ATI/Markham. Net result: NVidia was (and did) pick up a lot of very smart researchers and developers from AMD (I know of a couple whom were thoroughly disgusted with AMD management at that time)

He also trashed a lot of good and useful software projects for seemingly protectionist reasons (if it wasn't ATI/Markham, it was dumped)