There is no one definitive answer to this question. However, a few plausible explanations include the following:
1. Kakashi is an accomplished and highly skilled ninja who has achieved great success in his field.
2. Kakashi is a popular and well-loved figure in the community, and people may want to get a chance to win a prize from him.
3. Kakashi may have some special skills or abilities that make him particularly suited for this type of competition.
4. Kakashi may be simply enjoying playing the game and having some fun with his friends.