To be able to think 50-80 years in the future is just an incredible luxury most do not have, particularly most small farmers, and particularly, I would think, most small farmers in a developing country.
Parents think that far into the future, as do thoughtful members of a productive society.
MBA driven obsession with the next quarterly earnings report isn't a universal infection, yet, thank goodness.
Their point, as I take it, is that investing in future welfare at the risk of current welfare rarely makes sense to people's minds, and in fact often jeopardizes future welfare as well as current, due to the fact that any harm it causes now may in fact carry over into the future.
What you're talking about, on the other hand, is about corporate greed and indifference. Very different scenario.
E.g. A struggling parent buying cheap bread for their kids today rather than starving them for a month to save money and feed them more nutritious food later, is not the kind of decision one would attribute to MBA driven obsessions. Nor is this parent a worse parent than a more affluent one who can afford such an investment without starving their children.
Ironically, thinking that far into the future results in many choosing not to become parents.
Kim Stanley Robinson's recent novel "Ministry for the Future" had an interesting take on this; that our future descendants may need legal standing in the court system, and lawyers tasked with defending their needs there.