I have read them. They all advice you to either
A) go and farm tons and tons of minerals or
B) play the AH. Buy cheap stuff, sell for more. Or
C) Use bots
The richest guy I knew was an old Paladin who used to raid with me. Hardcore raiding, 6 days/week from 8am until 00. World top 50.
He was barely online before raid hours, and went offline most likely directly after the raid.
It was later that I figured out that he botted with twink chars during the night and had three toons at the gold cap. Fuck that.