The housing-price boom of the 2000’s was little more than a construction-supply bottleneck, an inability to satisfy investment demand fast enough, and was (or in some places will be) eliminated with massive increases in supply. By contrast, there has been no increase in the supply of farmland, and the stories that would support a contagion of enthusiasm for it are in place, just as they were in the 1970’s in the US, when a similar food-price scare generated the century’s only farmland bubble.
2000年以来的住宅价格上涨更可能是源于建筑行业的供应瓶颈（无法足够迅速地满足市场的投资需要）并被（在某些地方将被）随之涌出的大量供应所抵消。相比之下农地的供应却没有增加，而激发人们投资热情广泛流传的故事正大行其道，正如1970年代的美国，一场类似的食品价格恐慌催生了上世纪唯一的一场农地价格泡沫。