I don't agree completely with you because comparing the investments made by the rich people to gambling which has no sure guarantee of profit is a great error that should be corrected because investment is done on a working business or even property with the hopes of making money over time and with gambling is not so due to the fact that gambling is highly uncertain.
No body has become rich because they see gambling for the sake of getting entainment which is a costly deal to do with the fact is that gambling has been a source of making people to lose money and that is one thing that people should be afraid of