The message discipline ("This is all just a bargaining tactic") from the Intel ranks is quite astonishing. Not that it will change anything...
We have been through this before with mobile, with a multi-year-long "Intel will unleash their uber-superior chip design and fab skills any day now, just you wait". But the true believers don't want to larn anything from that episode either.
It seems to me much easier to simple accept that MS mean what they say. Intel provides a constrained set of products, optimized for Intel (short-term) revenue rather than technical excellence, with a substantial burden of overhead (primarily in design time and thus very slow readjustment to changing customer needs) to support functionality (x86 programming model) that MS does not need or care about in this space.
A primary flexibility that the ARM vendors will be willing to offer, and that Intel has not been willing to, will be over memory controllers. Intel is very big on segmenting by memory controller (thus forcing you to buy substantial compute performance even in the main thing you want is a large physical memory).
Likewise Intel's current solution if your problem is well-matched to HBM is to force you to buy a Xeon Phi, even if the computer aspect of a Xeon Phi poorly matches your needs.
Likewise Intel seems incapable of actually delivering persistent RAM. We've gone from Optane being about to sweep the world in nvRAM form to Optane being available (in limited amounts) ONLY for SSDs. And you just know that by the time Intel gets its act together for nvRAM, it will charge an arm and a leg for the Xeons that support it.
Meanwhile Optane is not the only nvRAM game in town, and it may well be that an ARM server vendor actually ships a complete, usable, nvRAM system before Intel does...
Essentially Intel remains stuck in a world where what it sells is LARGE steam engines that you're expected to treat like special snowflakes, and to which you're expected to adapt your business and programming model. Meanwhile ARM sells electric motors of all sizes, from tiny to huge.
If you want to build your car with 120 electric motors in it, from tiny to very large, ARM will happily supply you with all you need. Whereas Intel will ONLY supply you with a steam engine, all the while lecturing you that, with enough belts and gears you can easily run every window, the trunk, and the CD player all off that single engine, that you should be grateful to be part of the colossus that is the Intel family, and to get to do things the Intel way; and that your radical ideas about using lots of small separate motors are clearly stupid hippy thinking...
The amazing thing is that Intel LIVED THROUGH the world as it changed from the Steam Engines named System 360 to the rise of the PC and the Server. But Intel is a financial company these days, not an engineering company. Its finance-blinded management has no knowledge of, and no interest in, history as ancient as the 1980s, let alone the 1880s.