If the house edge is 0.5℅, theoretically for every $1,000,000 or 40 BTC that you wager, you lost $5,000 or 0.2BTC.

That's considering you are playing a 50/50 chance game with the same bet, and of course it's not that simple after you take into account varying bets...however even with varying bets, it's unlikely to come out $5,000 or 0.2 BTC ahead on the journey of wagering $0 to $1m.

We should all remember that these programs are funded by losses.