You don't think the technology involved in building a tractor in 2022 is many times greater than one built in the 70's. It's not an apples to apples comparison.I am glad your wages have doubled in 22 years. Go talk with the UAW workers that built John Deere tractors in 1977. The go talk with their grandkids who are also UAW workers building John Deere in the same factory 45 years later.
When you get done doing that go ask the farmer that bought a new 140hp tractor in 1977
Then ask the farmer that bought a new 140hp one in 2022
And those UAW Deere workers are doing OK wage wise. Their latest contract was very lucrative.