Intel provides backend rebates to channels or even large commercial end users (usually if you use Intel ssd) for exclusivity. AMD does the same — I’m sure HP has favored pricing.

As someone who bought large numbers of devices in the last year, I would say that the AMD devices had more supply chain issues than any other devices, from thin clients to desktops to laptops.

That may not mean it’s an AMD thing, those issues may well be due to the OEM as many devices/components are constrained.