It's mainly the fact that bustabit is the preferred choice of game for megawhales like whatevvs, FREE-JBAY, KLITZ, etc. Probably due to them being around since 2014 and always processing large withdrawals instantly. There is no crash game in the world that has a higher trust level than bustabit. Just a few days ago, the whale PredictableLegacy lost 220 BTC within a few games. I mean, it could have gone the other way too... I guess luck/variance is also a pretty major factor. But yeah, everything seems to be going very well for the two sites, and I hope it continues.