Sorry, "what remains of their share after Bustabit deducts its share" means 50% profit commission. I should have worded the question more appropriately.
When you say "bankroll investors have less variance now but also receive less EV than they previously did", did you run it past investors for their views? May I ask what the primary reasons were for the change? If you already had a working and highly successful formula on your hands alongside an excellent reputation why change the format when it might alienate some investors?
If you have thought this through and believe all investors will prefer this route then I wish you success. I see your reputation and the Bustabit/Bustadice reputation as something quite formidable in crypto gaming circles so hopefully investors will be go with the flow.
Although I'm sure at least a few of them appreciate the reduced variance, there's no doubt that most investors prefer the old commission structure. I anticipate that some investors will choose to divest because of this. As long as the bankroll remains large enough to support the wagers players want to place that's okay.
At 5,000+ BTC and 6,500+ respectively the bankrolls of both bustadice and bustabit are significantly larger than they need to be, which indicates that a higher commission is appropriate. As the bankroll shrinkshopefully to a more sane sizeinvesting becomes more attractive until eventually an equilibrium is reached again.