I agree my response was snarky, I disagree it was shit. I wasn't looking for a "sick burn" sort of reaction.
Here's a slightly longer and more boring version of what I posted:
Itanium came out at the tail-end of a long movement from special-purpose to commodity hardware; servers and workstations were moving from 68k/MIPS/Sparc to PC-based hardware. It was a DSP that ran general-purpose loads "okay" when most people were looking for a general-purpose CPU that ran DSP type loads "okay" (i.e. the various SIMD extensions to x86 and POWER).
Anything that starts with "If Itanium had gone mainstream" is a counterfactual. Maybe it would have delayed GPGPU as the performance advantage of programmable shaders over running on CPU would have been smaller and maybe without AMD's competition, it would have allowed Intel to keep bus-speeds lower for longer.
My original point that Itanium was a failure to deliver the hardware people wanted rather than the failure of software to appear on said hardware stands.