at what point is the bail is set
The point of jail is that they want to make sure you don't flee the jurisdiction without going on trial. Bail is to let you live your life and prepare for trial out side of jail. The amount of bail is set based on what a lot is to you and how much of a flight risk you are. A billionaire might seem like they would have the means to disappear, but usually their local affairs are so important to them that they wouldn't. However bail might still be set high.