That's what I tried to refute in my previous comment. So in case I miss something, explain to me how is it economical for someone to enslave you, if it costs him $50k/year and he will almost certainly extract less value from your work (from data i found $20-$25k/year jobs are common for prisoners). That's the exact opposite of free labor. It is very expensive labor. I would agree if the cost was like $10k and you would extract considerably more from the job done. But it is not the case. Maybe in countries where they don't spend much on prisons what you say works. I don't think it does in US or in any other developed country