What happens when you cancel your iTunes Match subscription?

Given that iTunes Match came first and Apple Music years later, many readers aren’t quite sure which features come with which service. That’s partly because some aspects overlap, especially access to iCloud Music Library syncing and streaming, which requires a subscription to either Apple Music and iTunes Match.Macworld reader Anthony wants to know particularly about what would happen if he has Apple Music (via a family account shared with his brother) and he cancels iTunes Match. H