Not entirely unrelated: the wife's sister and kiwi bloke run a 600 acre sheep farm over in NZ (in the bottom of south island i.e. Mordor). They've been trying to go organic but it's tough. The price of lamb is really low at market (a matter of the equivalent of a few quid) and, as all commodity prices are pretty much the same as here to go with a lower average wage, it's not exactly plain sailing.
I think the carbon footprint backlash will hurt as well. Up until relatively recently NZ lamb looked like a good option. Now, considering the miles lamb chops have to travel from there, I don't think that kind of foodstuff will continue to be so popular here in the UK and Europe.