Lexicus
Deity
I agree that the depression was a classic. It was similar in every respect to every recession that came before it, as it was a standard feature of the free market capitalism of the times. It was the final demonstration that free market capitalism doesn't work, in that every one of those recessions was deeper and longer than the one before it, and it was predictable that if the next one followed that pattern and was deeper and longer than the depression of the 1930s it would be fatal.
That pending fatality is what justified the New Deal, which was the first exploration of interventionist capitalism, which has been the economic structure ever since. Trying to equate recessions suffered in a totally different economic structure is a poor effort. A crisis in an intervionist capitalism system needs to be analyzed within the rules of that system, not adjusted to fit the rules of a dead system.
Your notions about "free markets" and "interventionist capitalism" are flawed. The first forays into "interventionist capitalism" (at least in the United States) in fact began in the 1890s with the Progressive period.
Second, what change to the analysis would you suggest? It is simply fact that both the Depression and Great Recession were preceded by years-long period in which rising productivity was accompanied by stagnant or decreasing real wages. In each case the resultant accumulation of financial wealth had no productive investment outlet and thus went into inflating a speculative bubble.
The rules that you are talking about which in fact changed how the financial system worked had been largely discarded by the end of Bill Clinton's administration.