Maybe he IS thinking of getting into the business. Offer to be his advisor, for a hefty fee and make him sign a waiver of responsibility for when he decides that it was a really bad idea to get into something he knows nothing about.
Q- How do you make a small fortune in the AV industry? A- Start with a large one.
My mechanic told me, "I couldn't repair your brakes, so I made your horn louder."