Actually, none of the documentation says it is for one user. It only speaks to 3 instances / licences per purchase. It doesn't cover, for instance, one user/ purchaser with 2 computers who lends one of them to a friend. I think writing a licence agreement that covers all the possibilities will be difficult. They might be better served to stay with 3 licences per purchase for the few instances where sharing may be happening


BIAB for Windows Version 2019 (643)
Windows 10 (1909)