Very few U.S.-born workers respond to job ads for seasonal crop work, Show up when work begins, or Stick around through the harvest season. "Even when wages reach—or exceed $20–$30 per hour, seasonal U.S. workers overwhelmingly opt out of field labor. That persistent gap is why American agriculture depends so heavily on immigrant and guest‐worker programs, and why mechanization continues to accelerate."
Note that the same report says legal, temporary "H-2A workers are more productive and provide labor insurance for producers of perishable commodities, but cost $5 to $10 an hour more than settled farm workers because of recruitment, transportation, and housing costs."
That’s a silly response. Why do you think workers are exploited? You say we need to play by the roles, but you’re going to balk at the cost of playing by those rules.
or they just go out of business and we import our non mechanized crops to developing countries. Farming isn't a high margin business and if it were as simple are rising wages and prices, you wouldn't see the farms going out of business.
There is a reason European farmers are deeply subsidized.