IIRC it wasn't the sub-primes that started the whole mess, it was the Sterns hedge funds that went into default and the rest started to fall like dominos. The zeros/ones computer hedge fund = Company (A) lends company (B) $10B interest being $3M, Company (B) lends company (C) $10B interest being $3M, Company (C) lends company (D) $10B interest being $3M, Company (D) lends company (A) $10B interest being $3M, say this is repeated three times the result is; company (B) owes company (A) $30B plus $9M interest, company (C) owes company (B) $30B plus $9M interest, company (D) owes company (C) $30B plus $9M interest, company (C) owes company (B) $30B plus $9M interest, Each company could advertise that it had $30B in assets (their loans to other companies within the group) and sucker the public into investing hard cash which it used for operating expenses. Each company uses the "off the record" accounting practise and doesn't show the $30B they owe to each other. say company (C) runs into trouble; company (C) tries to get half it's money back from company (D) company (D) says it has an agreement and just has to make regular payments, company (C) is now technically in default, word gets out and company (C) can't raise any money in the market, company (C) informs company (B) that company (C) can't make it's payment and is going ito officially default, now company (B) is in trouble because without money from company (C) company (B) can not make it's payment to company (A), round, round we go till the whole lot is in default. All four report that they each lost $30B+$9M in interest for a total of $120B when in actual fact it was only company (A) that lost $10B in principal plus $9M in interest that it hoped to gain. The original $10B just kept going around in cyber circles.
The simplest solution to the sub-prime problem would have been to just rewrite the mortgages at the original rate.
How many of the fat cats (my apologies to cats) are going to go to jail?? All depends on if the pilots of their corporate jets can fly them there.
Fred