My ideas is, once you go to a gambling site, deposit your money and place a bet, you don't go "ah well, that's that let's just move back to normality"... You keep gambling (sure you might have a stop win and a stop loss but inevitably you will probably go back to the site and keep gambling).
This is what happens:
Round 1: 512 winners (2 BTC each), 512 losers (0 BTC each).
Round 2: 256 winners (4 BTC each), 256 losers (0 BTC each).
Round 3: you get the point
.......
Round 10: 1 winner (1024 BTC), all others lost all their money..
This is very linear though and almost impossible to happen without some sort of scatter.
The idea that that one person could also go on to lose that 1024BTC if indedd they did earn that and didn't go and bet each time and lose at some due to scatter...
And once they turned their 1BTC into 1024BTC maybe they'll keep gamblig on a martingale with 1BTC and end up profiting at the start but inevitably probably losing everything trhey've earnt on the site...