We all know the APUs aren't available which is why we are discussing sales of desktop chips.
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I have no recollection of AMD ever having a successful laptop range even when they dominated the desktop performance wise.
I recall that the wisdom was to buy AMD for desktops and Intel for laptops.
You mentioned the early 2000s but that's when Intel started the Centrino platform branding using Pentium M CPUs which dominated the market.
That was followed by Core Duo towards the middle of the decade which increased their lead over AMD.
I'm not saying they never had a decent laptop platform it's just if so it was over 15 years ago and I very much doubt that as you stated the vast majority of laptops used them.
They didn't even manage that for desktop when they were the clear leader.
I think you are wrong.