Since Nigel doesn't quite gather the idea that the only number 1 idea that remains at number 1 all the time is still the number 1 idea even if another gains a bit on it. I'll explain it again. Taxes are still number 1, while something gains in ebb and flow it doesn't change that. It is flat inane to say that taxes do not motivate people. However, it isn't solely taxes that help give companies belief in the stability of policy. I stated two things here, but you have added another that helps out. Lending.
Businesses need several different policies to be relatively stable. Lending policy, tax policy, policy regarding benefits, regulatory policy... All of these and other while in flux cause companies to hold cash (including lending institutions) rather than spend it. This is in all areas, including hiring.
If they can continue to get higher productivity from less employees they will... Even when it makes sense to hire..
Let me give a solid numbers example. In Spring of '09 earning per share on the S&P was $7, today it is $67/share and is heading into record numbers soon. All this while not hiring... It makes sense when earnings grow at that rate to hire, however the instability of policy causes companies (Apple is a very good example, they have billions in cash, cash, not invested, just cash) to hold their cash rather than to bet on an uncertain future.
Pretending that when I say policy I mean only taxes shows a crippling limitation on your understanding not just in business, but actually in what words mean. While tax policy remains the number 1 concern of even small business, it is ALL of the uncertain policy that causes them to hold their cash.
If we want these businesses to begin hiring we need all of this to be relatively stable. Your chart showed that I am correct, all of the things I list are in there (even more than just the few examples I listed). Yes, lower demand has its effect but fluctuating policy has its effect too. Demand will increase when businesses are less uncertain about the future of policy. Obama's here, there, everywhere, all things to all people approach is causing a larger problem.
Pass the extension of taxes, fix the crappiest law ever passed (the health care debacle that doesn't even cover all the people reported to be the problem in the campaign), and set solid policy for lenders so they too can have some certainty and we'll be better off. Until some of this is done we will remain in stagnation...