[sdeframond]

Many businesses are not thinking long term. Farming businesses are businesses too, and may prefer short term profitability over long term sustainability.

See for example the depletion of the Ogallala aquifer, which is at the same time an existential threat to to farming and caused by farming.

https://en.wikipedia.org/wiki/Ogallala_Aquifer

[bootsmann]

This is a tragedy of the commons and not comparable to a singular farmer making a singular decision about what to plant on his field.

[michaelt]

Imagine if hypothetically a supplier offered very competitive - maybe even loss-making - prices when they had 25% of the market; then once they had 90% of the market and most of their competitors had gone out of business, they planned to raise prices substantially, make back the loss, and produce a big profit.

Isn't each customer's decision to buy (or not buy) from the loss-making supplier a tragedy-of-the-commons situation?