Good story full of lessons. He was just lucky as his guess work really worked out for him.His case is just opposite of a guy who paid 2BTC for a piece of pisa.I beleive he may have been blaming himself for such folly.
He just needs a good strong accountant and a stronger wall between his family and himself, as they will try to claim some of it and drain him dry.

He does owe them an amount if it was their electricity that he used all those years, but for the most part, he is an adult now and should be shedding himself of connections with the parents.