[berntb]

I don't disagree with any of the above, but there is a small problem.

During the state transfer, the climate might change fast (there is some evidence for that happening before), which will (over a few years' time) make farming ... well, problematic.

It might be good for the world/humanity, but it sucks to get caught in the middle.

[electromagnetic]

I agree, the climate can potentially change fast (it could potentially change very slowly, we're guessing at a process we haven't been around for before) which is why the burden will be on governments to monitor changes in arable land and provide incentives for farmers to grow crops in the areas opening up rather than waiting for our existing farmland to become useless.

With proper care and planning we should be able to ride out even the fastest change of climate that nature can throw at us, however I started this sentence 'with proper care' which is certainly not a synonym for the government handling of industry.