What are the actual tangible gains they make from this beyond just limiting the use of a Disney+ account to <=n screens and/or locations at the same time (where

What are the actual tangible gains they make from this beyond just limiting the use of a Disney+ account to <=n screens and/or locations at the same time (where n can be 1 for all I care)? See also: netflix. Some of us actually travel for a living.