On the flip side, there is at least one investor (maybe multiple) that divests, plays and profits, then reinvests it all. Same happens with JD.
When he does this, it's bad for all the other investors. He's not part of the bankroll while he's winning, so the rest of the investors take a disproportionately large share of the losses.
On JD we've sometimes seen a chain reaction occur - some player wins big, so an investor feels like he has to divest-win-reinvest, which causes the other investors to lose more, making them in turn to the same thing. Eventually one of the investors suffers heavy losses, but until that happens it can look like being invested in a dice bankroll is a bad idea.