Your causality doesn't seem to line up. As you tell it, the workstation CPUs were already peaking in terms of complexity and cost, when Intel and HP announce a huge investment in the next generation of this class of CPU.

This doesn't signal that the segment is economically unviable, and if you're an existing player with an existing strong design, it signals an opportunity to invest in your own next generation and meet Intel/HP head-on with a superior brand (for this segment) and a more plausible next-gen design.

Intel and HP show up promising a clean sheet design in a decade doesn't seem like a time to roll up your market leading offering and go home.