I think worst case he is going to be a successful HP engineer, definitely not as rich but can probably still retire early and do some teachings.

Research suggests happiness often precedes success rather than following from it - Woz likely would have found joy in engineering and creation regardless of financial outcomes.

Even in another universe, if such thing exists, I can imagine Woz is just as successful, if not more, than he is here.

Success in itself is not a sufficient condition of happiness. How many unhappy billionairs are out there?

That would be my guess. Or you can even consider that him focusing on happiness led to success.