Winemaking uses far more, but does it really have to? Does the $10,000 bottle of wine really that much more labor in it to justify that price? or are value and labor only loosely related? If I get lucky and find some diamonds on the ground, have I labored a lot for the value of those diamonds on my patch of dirt compared to your patch of dirt. There's no value with absolutely zero labor, sure, but there's clearly a difference between a carpenter making 100 chairs, and a programmer making 100 copies of a program they wrote.