...which is why I stated that Intel's pricing structure is going to depend quite heavily on Zen 3 availability.
That's key and it something no one knows right now (availability). In the bigger market of OEM systems, AMD only has Zen 2 based "Pro" chips with an iGPU right now for OEMs , and that will be decidedly slower. Zen 3 is still nowhere to be found in the 7 major OEM lineups and we don't have a Zen 3 with iGPU yet. The majority of OEM systems sell without a dGPU, so right off the bat RKL will be better suited to an OEM's customer base. So this will undoubtedly suck up a lot of the supply for RKL.
I do think Intel is missing an opportunity with March releases of their new chips though, January would have been a blow to AMD and their supply situation. March gives AMD a couple more months to get supplies out there, and while AMD's Q4 2020 allocation of 70-80% to consoles will I think continue to impact availability for that time, I've seen nothing on their Q1 2021 allocation and by March that should be coming into play. I'm sure RKL will have big supply coming online, but we could actually see big supply of both RKL and Zen 3 desktop at about the same time.
But all that said, desktops are a shrinking percentage of the market and the real battleground is laptops. Very little discussion on that segment at these enthusiast sites.