Why do you measure everything with high performance as physical activity then? Shooting is sports, but what people do? Hold and aim? Not much of a physical activity either. Clicking mouse also a physical activity, or show me someone who has telekinesis skills. Equestrian is a part of Olympic games. But all you do is sitting on horse and controlling it. Horse does all physical activity then. I think it will be correct to call those who professionally compete in video games as sports, but all rest as entertainment. Professional video game players also have teams, timetable, they prepare for games, concentration and etc. I think it will be fair to call as sport what they do.