That's only a fraction on what they are earnings from their salary and from products endorsement but still they should not divulge how much they've lost and losing it harm their reputation for future endorsement , of course talent agency will have second thought hiring gamblers for fear of accusations they they are supporting their gambling habits.
I thought of this too since they can afford to lose this huge money in gambling meaning they have back up or reserve resources to which they can still be using but not to gambling or intended for the basic needs or to sustain life until retirement or gets old.
If not then they worthless after all, having that huge money loss is a no brainer at all. Money is in important because it.can buy things that makes you happy but not all things that money can buy at least some things.