Right now, there's 1.34231128 BTC left to make payments with. If they do it right and wait until it gets wiped out to 0 to stop making payments, a new cycle can begin with fresh deposits. You might be surprised how long a cycle can last.
'if they do it right', 'a new cycle can begin with fresh deposits'.
All wonderful justifications for a ponzi scheme by the people supporting it. All ponzi schemes fail because 'they didn't do it right' and 'the idiots stopped pumping money into it, therefore it's the investors' fault!'