Mate. There is so much land going fallow because the big corporations haven't got them locked up or isn't funny. Miles and miles of farmland locked away behind dubious deals and crap luck. Farmers being paid to dump their produce because it's cheaper/better for the supermarkets budget.

Land use isn't a non-problem. It's just not a show stopper. It's a matter of getting it going and showing theirs money to be made and bam your head will spin at how fast the mega corps get it off the ground