He can delegate now, can't he?
Tony can do the investor tours. He will probably enjoy it. He's already doing the presentations.
He probably needs a guy who will do the contract negotiations abroad.
As for the other stuff, he probably needs to hire one or two people and teach them everything he knows. That's what I did when I left my job. Even though I was fed up, I stayed for a month and taught someone everything I knew. 8 hours per day. Actually I think that was highly unsual but I felt it was my responsibility. No manager ever told me to do it, obviously. They don't have a clue to begin with.