I mean, the MSA-purchased version is a retail key, but it doesn't give you a unique activation key and seems to use a generic one (at least when doing upgrades)

I mean, the MSA-purchased version is a retail key, but it doesn't give you a unique activation key and seems to use a generic one (at least when doing upgrades), so... trying to move this "retail" copy is really, really hard and inconsistent compared to a version you have a key for. https://answers.microsoft.com/en-us/windows/forum/all/transfer-windows-11-pro-product-key-to-new-laptop/9ce5db0a-aa55-4ccd-93a4-bb59968cb971 https://answers.microsoft.com/en-us/windows/forum/all/transf... https://answers.microsoft.com/en-us/windows/forum/all/transfer-windows-1011-pro-digital-license-to-a-new/d1b458e1-6859-4720-9d23-2adf4aede644 https://answers.microsoft.com/en-us/windows/forum/all/transf... So, I will admit that it is possible. It's just really hit-or-miss and complicated, which can easily be avoided by just buying a retail package from somewhere with a code inside.