Ah I just checked there used to be a loophole by going through a disability program or using an alternative authentication method provided by Microsoft that would activate the 10 license after the update. Looks like it was patched in September 2023 though.
I believe they ended the free update from 7/8 to 10 when windows 11 was introduced. And I doubt ms is still selling windows 10 licenses.
Ah I just checked there used to be a loophole by going through a disability program or using an alternative authentication method provided by Microsoft that would activate the 10 license after the update. Looks like it was patched in September 2023 though.