sorry, old school here. But a sport involves the combo of physical exertion, and skill.
Exactly. Professional Sports athletes put in countless hours of blood, sweat, and tears to become the best at what they do. They need to practice and better themselves physically in order to become the best at what they do. They risk their bodies (from injuries) when playing sports. Sitting in a chair with a controller behind a TV/Computer screen is nothing compared to what "old school" sports athletes go through. 2 a day practices, 6am practices, etc. You just won't find that kind of sacrifice in esports -- at least not right now.