How do you define "entertainment value"? It's going to be different for different people. I enjoy video games, spend money on them, and have played some for a couple hundred hours I'm sure. But personally there's not a single one that I would take over my favorite albums, movies, or books.
So while there is a greater value per hour of use for games, that does not necessarily equate to a "better entertainment value" for all users.
So while there is a greater value per hour of use for games, that does not necessarily equate to a "better entertainment value" for all users.