As the pool of credit worthy borrowers and worthy inestment projects dwindles in a deflationary environment so the lending declines. It is no surprise that in still democratic USA, unlike the communist China, the Government cant just mandate its banks to lend. It can provide interest free credit lines, it can embark on a massive Qunatitative Easing and public relations campaings, but if banks are scared to lend and the borrowers are not interested in borrowing nothing will get the lending machine going. At least, not until the bad debts are liquidated through defaults, which are, of course, deflationary. And so the lending contracts.