It has to do with the fact that the man has years of experience running his business that you don't have. He has capital at risk that you don't have.
$20.00/hr will attract enough local help around here.
And what would the advertising costs be to attact them? And how much time would it take to assemble them? And once they were assembled, would they know what to do? Would they know what not to do? If they didn't know, how long would it take to train them? What would it cost to train them? Could you even get them all trained before the crop rotted in the field? If you trained 100 and 30 decided to quit, how long would it take to replicated the above process? How much would repeating this process cost?
He knows the answers to all these questions. You don't.
Around here word of mouth would be enough. 29 jobs paying $20/hr and word would spread quickly.
The concept that somebody has to be trained how to pick fruit is funny. LOL. It might be tiring work but it is totally brainless unskilled work. Totally.