The 'balance of Nature' is a misleading phrase. It is not a Disney-esque harmony, but the sweaty struggle of wrestlers, with efficiency of predation competing with that of procreation. A small change in environment, or the introduction of a new disease or species can lead to rapid extinction.
If an ecological niche opens, or gains resources, there is an explosion of varieties. When resources are abundant and predators scarce, even the weaker ones can thrive for a while. This explains the fat, waddling dodo.
The Industrial Revolution, and the Agricultural one that came before it, were the product of a few minds, and the sweat of many. They drove the move to more cities, which meant larger companies and bigger government. This widened the niche for a parasitic class of people who produce nothing, but are sometimes necessary. We call them consultants, middle managers, investment specialists (sorry Sackerson!), marketing gurus, guidance and life coaches, and the like.
With no predators, and a virtually infinite supply of resources (they print the money!), this class grew like a cancer. We have now reached the point that it consumes most of what we produce, and the system is shutting down. Since the typical politician or bureaucrat is of this class, the obvious answer is to give them more. Hence the Bush stimulus package.
I could be wrong, but I think that we are simply postponing the inevitable.