The intelligence of Gambler will play an important role in this situation because the limitation was known by the investor then he will be successful at the end otherwise he will not get the success till he he knows his the proper investment limitation on gambling.
Most of the gamblers know what is in the future in terms of risk on their investments before goes into it. I don't think we are ignorant of the risk and reward if it went in our favor. I think before any one has in mind to invest into gambling there is a complete decision that I can lose all I have.