I understand your point, but I think their are lots of ways around this. We've yet to see an effective internet-based campaign, with real-time internet campaign events and dissemination of ideas and candidate identity via non-traditional means (e.g. real-time online debates). This is just one alternative avenue.
And as I have said in another post, he has a lot of his own stuff to campaign with. His campaign is being run by one of his family, using their own offices to do so. He has his personal staffers doing websites and internet polling and other jobs, again, from his own preexisting company and staff.
This is not touching the money donated to him.