Are you saying that's the primary reason for the status divide? Any citations that support that, the most recent research I've seem looked at societal status/wealth of families a few generations back and then traced living descendants to find how stratified things were. They found a high degree of stratification; that across generations it was far less likely that poor ancestors had wealthy descendants. Perhaps IQ goes this way too?
>High IQ people commit less crimes //
Or get caught less often. Wealthy people (in the UK) often commit some common crimes at what seems like a far larger rate because the penalty is usually just a fine and to the wealthy it's pocket-change [speeding, parking offences, tax evasion ...].