That was ten years ago. Ever since, AMD had a free playing field… not that it helped.
AMD just stopped being competitive too quickly to gain a proper foothold.
The 22nm process node they wanted to use was cancelled, and now they're basically working to push it their 14nm products instead. Kind of such (edit:sux) for them to be fabless.
The Zen design would have been complete or nearly so by the time he left, but it looks like they're already slipping on their original time frame.
I'm looking forward to what they do, but it's not without some bumps in the road yet.
Shouldn't have sold their fabs, then.