Woah. 900mil is grossly a lot. It is like 3 generations of many families would not be able to amass that wealth.
But, money is really not everything.
Someone famous taught that if you give your best to do something you really love, people would recognise your skills and soon you would be able to earn money from those passions themselves. Take for eg: someone who loves skateboarding a lot and practises all the time, and becoming so good, he can end up becoming a sports brand ambassador or world performer etc.
The sky's the limit. If you are real good, people will beat a pathway to your door to get your service. It's true.