The part of AMD that once upon a time knew how to successfully manage a fabless company (ATI) would have known all this, the part of AMD that appears to have made critical decisions at AMD leading up to 32nm and 28nm appear to have underestimated the criticality of this portion of their job as managers of a then fabless company and it shows in their misexecution and financial situation today. (not Rory's fault, he inherited this mess)
IDC, I don't think that AMD management could do anything about some of its recent foundry woes.
When AMD was almost bankrupt and had to spin off the fabs, it was clear to everyone in the market that the agreement would bound AMD for a lot of time to Globalfoundries as they hadn't any other customer and ATIC would need a lot of time to get new clients. While the IT community saw this as a non-issue, as if ATIC would keep funding the former AMD fab business forever regardless of make money or not, the financial community was always very worried about the deal, because everyone on the market knows that the Arabs are more patient, but they hate to lose money. GLF didn't solve the issue of the unprofitable foundry, just took it out of AMD balance sheet.
Four years later and some billions in payments and new agreements, we can now see that ATIC forced commitments on exclusivity, pricing and volumes, and how ATIC played hard on that. I would not say that they became truly fabless as they were so entangled to GLF that it wasn't really a spin off, but an outsourcing. And with this, even if AMD switched that bunch of incompetents for a full fledged management team I don't think that they could have done anything to improve the GLF situation. It was beyond their control.
AMD past also came back to haunt them. AMD didn't develop processes in-house, they went for others for this, Motorola first, then IBM. AMD simply lacked the expertise in-house to develop a process of their own, and it was this team after the spin off that went ahead to implement an IBM process that IBM didn't have implemented and develop a new 28nm process in HKMG bulk, something they hadn't the smaller experience with. So delays and woes should have been expected.
When they spun off the fabs they became a fabless company in the balance
As for Krishna and Wichita, I tend to agree with you. They could have managed the situation better with GLF, but I wonder if the cuts and leaves that happened after RR had something to do with their cancelling.