The sentence that must be underlined is "is possible if you have the skills" with the meaning of uncertain even having any skills there is no guarantee that you will win gambling like the story shared. Don't take too many risks and gamble your fate for a gamble. Because a big win like that is pure luck regardless of whether you have the skills or not all will come down to luck. Then you break your own argument by the quote "Karas then managed to lose it all and end up with nothing". That explains everything again not on the basis of skills.