I am not sure whether global consumption WILL collapse. Could we just see below trend growth in consumption (pre GFC im talking about).
Consumption growth financed by credit has to cease.
I've just been pondering how much global consumption might decrease in the face of decreased credit.
It's logical to assume consumption has to decrease by the amount of credit taken out of the system for the medium term. Economies living off higher levels of credit will be effected moreso.
Global GDP equals global consumption and investment, where investment is dependent on credit drawn on future productivity.
It is hard to imagine global gdp going down more than 5% for a 'sustained' period. Greece's austerity measures aren't expected to reduce their gdp by more than 4% in 2010 and 2.6% in 2011.
Tracking the MSCI All Country World Index will be interesting to watch over the coming 2 years, as it should reflect the effect of credit withdrawal and consumption reduction.
Anyone who can understand how much credit (borrowings against future production) is sloshing around in the system contributing to global consumption and investment, should be able to set some realistic boundaries on the limits of a bear market, whether cyclical or structural. Something else to add to my reading list.