The recession is creating a growing amount of spare productive capacity across many different markets and industries. From container ships to hotels and from steel plants to airlines, the fall in demand has lowered capacity utilisation and put a big squeeze on profits. That pressure on profit margins comes not just from weaker revenues. Keep in mind that many businesses have a large fixed cost component such as the overhead costs of operating a network. Thus when output is contracting, the average fixed costs of production increase.

Declining demand and rising productive slack inevitably cause a fall in planned investment spending - economists term this a negative accelerator effect. BBC news reports that British Airways is cutting capital spending in response to the slump in demand and mounting losses. “The airline said it had cut spending by 20% to £580m ($952m) from £725m, and had lengthened its schedule of orders for 12 Airbus A380 aircraft.”

Further evidence for the reverse accelerator affect comes from Japan where Japanese firms cut their capital spending by a record level in the first quarter of 2009. In contrast Stagecoach is increasing investment in a fleet of greener buses.