I think, the distinction is necessary for determining the first video games. As the genre matures, we may broaden the definition. (E.g., to anything sold and/or reviewed under this title. The problem arises only as long as there is no recognition or general concept of video games.) I would also suggest to exclude anything that is "just" a simulation of an existing, physical game the same way. (Is a billiards simulation a video game? Well, is then a dice game with realistic animations of dropping dice a video game?)