[SomeOldThrow]

I largely agree. On specific crops this is a particularly worrying concern—see eg foreign crops. These are largely monoculture and are particularly vulnerable to eg disease. However, I see this as a lost battle.

[jimmaswell]

They'll learn the lesson to introduce more variance after the first big incident, if it happens.

[SomeOldThrow]

What makes you think the industry will survive the first?