Why not just let some of the farms go under, thus lowering costs of operating the remaining ones (because of lower demand as fewer of them will operate), and ra

Why not just let some of the farms go under, thus lowering costs of operating the remaining ones (because of lower demand as fewer of them will operate), and raise prices of their outputs? Isn't this how farm economy operated ever since initial industrialisation, and the reason why we don't have 70% of people still employed on farms anymore? From time to time some fraction of farms goes under.