He has lawyers to get him out of that / delay it indefinitely. It would be unfortunate if it came to this, but since he's clearly not interested in adherence to the law or an amicable solution (build a pathway or bridge or take the gate out or whatever), I doubt he'd get much sympathy if someone were to park a truck in the street at the end of his driveway every day, paying the tickets and ignoring any future orders to remove it, until the gate is removed.
Thinking about this more, a suitable punishment at this point IMO would be something like revoking his driver's license, not allowing renewal of any vehicle registration, denying tax returns, etc. Why does he continue to be allowed to use the public roads while denying the public access to a space?
Actually, forget all that, use that stretch of beach to hold public surf contests all the time (assuming there's a decent break there). Failing that, beach party every day.
Sounds like the sort of thing where a tech solution could play a part. A website prominently advertising the location and fun daily activities comes to mind.
Thinking about this more, a suitable punishment at this point IMO would be something like revoking his driver's license, not allowing renewal of any vehicle registration, denying tax returns, etc. Why does he continue to be allowed to use the public roads while denying the public access to a space?