Server CPU's don't need an iGPU and have high margin. In fact AMD was very strong in Server market back then when they had the better uArch. So instead of high-volume low margin console SOCs they could be selling lower volume high-margin server CPUs and high end desktop. The 5 billion spent on ATI could have been spent on process node development instead. But yeah if they could have kept up with intel in process is questionable. However if they did, they might be also producing Apple SOCs right now.
Exactly. That's why it is expected that Radeon 380x will be made at GF 28nm, will be a really huge die like 600mm, 300 W TDP and hybrid cooling.
This.
Although this graph is a bit dated, AMD server marketshare has not really budged since BD was launched (also called flat-lining). AMD's uArch with the initial Opterons (A64) pushed their marketshare in a few years from <5% to >25%. That was incredible. AMD had amazing innovations like HT vs. Intel's FSB and other advantages for server applications. They were efficient, fast and competitively-priced. More importantly, server margins are HIGH and continue to generate revenue after the initial sale (parts, support, etc.) plus you have an 'in' with the company and can continue to sell them more solutions and so forth.
All that came crashing-down with BD and obviously Intel's Core made a difference here, but Intel was not up to par with AMD on the server side until closer to 2008/2009 when the FSB was retired.
This is obviously arm-chair CEOing, but AMD should have doubled-down on the server market and done everything in their power to (1) keep their business intact and continue selling/replacing servers and (2) Bulldozer should have been a solution focused for servers. That means efficient, scalable, and the best IPC they can get. Unfortunately, BD was inefficient and tried pushing MT processing down to markets that didn't need it yet. IPC (not MT) should have been the focus.
http://notablecalls.blogspot.com/2011/02/advanced-micro-devices-nyseamd-upgrade.html
On a related note, I agree with the other poster here that maybe AMD sells-off their CPU division/patents and essentially morphs back into ATI again for purely graphics solutions. They have a solid GPU business, amazing IP related to graphics, and they could go head-to-head with NV in more areas without being dragged-down by their horribly-managed CPU division.
The caveat here is that they would need to completely clean-house with management and executives and start with a competent team. Also, do whatever they can to rid themselves of that terrible WSA agreement and become competitive again, be that TSMC, Samsung, GF, etc.