You can get rich with bitcoin without even having a single bitcoin, personally however I think many people's main aims are to become financially stable with the help of investments through bitcoin.
I believe they are able to stay around as they make a fairly steady amount from the trades on their site and have no need to run off atleast in the short term.
24/01/2015, Saturday. My account is being used as collateral for the loan by Muhammed Zakir. Repayment by 24/02/2015, Friday. Password has been changed and sent to MZ!
Ok, so I am looking for a loan of 0.15 to pay for website costs. I am willing to put up my account for collateral. I will pay escrow fee's etc. Rates of %2.5 a week for a maximum of 4 weeks? (I am likely to pay more than %2.5 I just want to make sure I can afford it easily) My account should be worth roughly 0.3 based of what other people are selling similar accounts for.
From the OP: "the API completely froze, it could be a hacking attempt so we quickly moved the funds out before anything happened. We left some bait (0.0088BTC) to see if it's the case. We're waiting for 3 confirmations before we take further action because hackers don't usually go for unconfirmed transactions. We definitely understand the worry, but security comes first ALWAYS."