One of the major reason why we gamble is to make more money from our initial capital or fund. The profits we do make in gambling is what makes us to keep tryimg our lucks in gambling so we can make money but many gamblers had forgotten the reasons why they are gambling take a wrong move to becoming addicted to gambling which supposed not to be so. Gambling is good and we should go for the fun alone.
The first sentence in your post describes perfectly how a gambling addict thinks. They think that they can make a fortune from gambling so if you think this is possible then there is something wrong and you need to learn more about this undistry and how casinos work and how they make profit. Casinos make profit if their customers lose. So they make sure you will lose in the long term and if you win and make a good profit then this is an exception just to give hope for other players.
You need to think of gambling as a mean of entertainment nothing more nothing less.
To me it seems odd people do not see something as simple as this, in any other industry people understand that if they buy a product or a service the price they are paying is not the actual cost of the product, the company selling them a product needs to profits from their customers and as such they sell for a higher price, and gambling is the same, we are paying for a service and the casino gives themselves an edge so they can remain in business, which makes becoming profitable something really difficult.