Bankers are, unfortunately, one of those things that we have to have - the alternative is a mud hut.
timenec has raised a good issue - any business will require a degree of regulation (you could widen that to include any
body - see criminal and civil law) to ensure it doesn't act irresponsibly and endanger life and/or property. The balance is having the right amount of regulation, enforced by regulators who both understand the industry which they regulate and which understand all the consequences of their regulation. And regulation needs to be both supported by the elected representatives of the people, and, at the same time independent of those elected representatives. Ditto the industry which is being regulated.
Banking should be seen as two separate functions - the commercial banking sector (simply: your high street bank), and the investment banking sector (hedge funds et al). The commercial banking sector has done little wrong, and judging by my recent experiences with the sector seems to be picking back up again. It's the investment bankers which are the problem - too many bad investments and risky undertakings. Actually - it's not even that: it's
confidence in the investment bankers' decisions, which undermines confidence in the rest of the system. Recessions are 90% psychological, 10% monetary. The credit taps were turned off not because the banks ran out of money, but because the people holding the tap-handle panicked. And the panic was over the ability of the banks to lend the money.
Now, getting our politicians involved: Take the
Basel II Accord, enacted into EU Law by the "EU Capital Requirements Directives". Suddenly those banks sailing close (but perhaps not dangerously close) to the wind find themselves on the wrong side of the line, and in attempting to get back over the right side of the line (the line is not necessarily real - it is as real as a territorial waters line on a navigation chart, to continue the nautical theme) panic and cut the credit flow out of their banks. Government, demanding that these arbitrary lines be met, pours money into banks sailing on the wrong side - but note that the money being poured is no more permanent than a tow-rope, it is in the form of loans which are to be paid back irrespective of anything else. Cue even steeper cut of credit as the banks aim to avoid drifting back over this arbitrary line - which then hits the rest of the economy.
Here's how: Almost all businesses need loans at some point - whether in the form of loan capital to assist with start-up, to invest in new sites/equipment, or simply to smooth out the flow of payments in and payments out. Cut that line of credit, and either the new equipment which was to be bought can't be, or worse the company cannot afford to pay creditors and employees. That has repercussions both ways - the supplier of said equipment gets a defaulted sale (big problem if the raw materials/lesser components have already been purchased), and the customer of that company does not get their product (which hits them because they have no product to sell, and if that customer is a specialist contractor it could mean them cancelling a contract - which could hit them with cancellation fees). Extrapolate across numerous companies and you have a big problem. Staff being made unemployed also hits the wider economy - less consumption.
Which brings us to the cause - whilst the immediate cause was the banks turning off the credit, the little-seen cause of that was a regulatory decision requiring the banks to have greater capital - which brings me back to my earlier point about the regulator understanding both the industry which they are regulating and the consequences (especially the unintended consequences) of their regulatory decisions. And as the politicians are the only people able to make such widespread regulatory decisions (Basel II is incorporated into an EU directive - it is law, made by politicians), then the politicians must shoulder the blame for any unintended consequences of their actions.
Please note: I am
not saying that this is
necessarily the cause of the current recession, just that a recession
similar to ours could happen in the above circumstances.
Politicians need also shoulder some of the blame for encouraging the behaviour of both lenders and those seeking credit - I could pick out a set of choice quotes, however I suspect it might be sailing close to the wind as regards politics on this forum. I'll merely note that the media loves a scapegoat, and provided the scapegoat isn't a politician, then all is well. And apologies if this sounded like Economics #101.