It’d definitely be more efficient to build the automated system, then just profit share with the rich guy.
China would have the workers dig manually though, just to keep the workers busy.
Nigeria would build the automated system, then that one rich guy would take 70% of the money and 30% would go to a few people in government and everybody would still be poor.
Venezuela would let the rich guy build the automated system, then distribute a lot of the money to the poor through programs. Then they’d kick the rich guy out and realize that you can’t get the oil with just picks and shovels.
In Russia, automated system build you. So you’d base almost 70% of your economy on automated system and give all of profit to glorious workers and hope the price of oil doesn’t decline.