I can't give exact numbers to back it up, but from the major whale betting, I noticed that while the relative amount of the bankroll I had remained the same, when the whale won/lost most, my profit had still been dropped by a noticeable amount. I've seen this in the past, as well, such that if I had 1% of the bankroll and profit was at +30, then it went to -30 and back to +30 while I still held exactly 1%, my profit would be down by a decent amount. This is likely because of the cut the site owners get, which is based on a per-roll basis (so if that +30->-30->+30 had a turnover of 1k BTC, the site owners get a pretty nice chunk of the investor profits.
Yeah, this can definitely happen. A whale can lose money, but if they lose less than the EV it's possible investors will be out of pocket. If the whale does their EV (or worse) investors will make a profit. And if the whale wins (like today, someone won 7 BTC on BetterBets) it can do a bit of damage to the investor profit.
It's really a tricky balance of splitting profit between app developers (who do all the work) and investors (who take all the risk). As it stands right now, app developers have made a 93.136 BTC in profits and 9.02 has gone to investors. I'm not sure the split has been so terrible, I just wish we were doing x10 the volume to ease out some of the variance and bring more money to the table =) For the last month or so, MoneyPot has been running with 0 commissions, so our primary source of income has been cold addresses (
https://blog.moneypot.com/cold-addresses/ ) which isn't included in any of the stats (but more than covering hosting costs, at least). So if anyone has coins they need mixed, give us a try
