As you said AMD wasn’t even in a position to do anything about mobile. Intel on the other hand had the best high-end ARM chips in the early 2000s. XScale would

As you said AMD wasn’t even in a position to do anything about mobile. Intel on the other hand had the best high-end ARM chips in the early 2000s. XScale would have been the default choice for the iPhone and all the other smartphones. Had they continued developing it it’s unlikely anyone could have caught up that easily. They were better positioned to dominate the ARM market than Qualcomm (and possibly ARM itself). Then due to hubris/delusion/? they decided to scrap XScale and develop low-power x86 chips and everyone knows how that turned out..