> that eventually disrupted the market leadership of Intel’s 64-bit Itanium chips Erm, Itanium never had any kind of market leadership. It was a failure.
That's true. But part of the reason Itanium as a failure is because AMD came out with x86-64, which was so successful that Intel ended up being forced to adopt it (it didn't help that the first generation of Itanium chips was... underwhelming).