I think that would detract from his primary focus, which is teaching the subject. If he had to spend time maintaining a server, managing accounts and sending o

I think that would detract from his primary focus, which is teaching the subject. If he had to spend time maintaining a server, managing accounts and sending out DVDs in the mail, there won't be much time left for teaching. If he had to hire someone to do it for him, he couldn't offer the service for free any more.