Probably because, like many traders, he's had some success in the demo account and lured by untold riches out there, took a gamble.
Paper trading is like masterbating. Sure you may be good at it and think nothing can go wrong, but when you put a girl into the equation for the first time, you end up shitting all over the place. -Kastro
That's so sweet. Lemme guess... you are an incurable romantic at heart, aren't you? Actually, I'd say paper trading is more like mental masturbation. All the hard (or not...) work, no reward.
You will never find a demo with even $1000 starting sum. It's not because there is nothing to do in fx with such sum, it's because of greed. You are lucky enough that your greed let you put so little.