I'm not denying the effects of global warming, nor the potential benefits of GM (nor the potential risks), what makes me think you're being a bit of a **** the blithe causal connection between barley prices and planning the future.
If you were in the least aware of the commercial realities you would know the cost of barley isn't anywhere near as important a contributor to the cost of making beer as say Excise, Energy, Water/Waste disposal, Labour, Plant Amortization... Truth is Malt doesn't make the top 5 costs, barely into the top 10.
If you want to save money in a brewery there are smarter ways than agitating for GM that might pay off in a decade, things like energy and water savings, smarter disposal waste, CO2 recycling...
GM will I am sure be a part of all our futures, for good or ill, I think its important that we look at the possibilities carefully and thoughtfully - not just some knee jerk reflex, based on what looks like a BS excuse!
Mark