There is a reason why there is a "max bet", that Is calculated for being a very minimum of what could be the max bankroll, so the max bet is not like 25% of all bankroll, it is quite small (I forgot what it was but it was something like 1% or something) and that Is why you can literally have 50 people all betting max (and most of the time there are not that many people with that much money who would be willing to bet that much let alone at the same time) and you would still have a good bankroll.
If you had 50 people max betting (96.58 BTC bets each as of now), the game would cash out at 1.02x, because that's when bustabit would be risking exactly 1.5% of its bankroll (onsite + offsite bankroll).
What happens when the server forces people to cash out?
Under some circumstances, the server will force people to cash out.
The most common reason is that the game multiplier has gotten so large that we are risking too much of our bankroll (1.5%). If a player has won more than 1% of the bankroll, that player is also forced to cash out his winnings.
Of course that's extremely unlikely as it's pretty rare to see even one person bet more than 1 BTC at a given time.
How do calculate those sums? Do they pop in to your head or do you use a calculator?