AMD isn't putting an IGP into all of its CPUs because it cannot afford wasting wafer space on IGPs most people buying CPUs above entry-level won't be using.
And my 2006 comment was with regards to AMD getting blown out of the water by Core 2, not the ATI purchase, didn't remember that both of those things happened in the same year. In any case, with more of the big money in computers moving to datacenters, AI and supercomputers, AMD would risk getting left out if it did not have its own datacenter-AI-HPC infrastructure. Imagine AMD avoiding bankruptcy only to almost completely lose out on the fastest-growing highest-margins computing market segments and ultimately fail all over again.