Hardwork for what? Hacking the system? I guess it is just applicable to online sites or other electronic based games which includes machines or program. Card game can somehow be predicted knowing it has a limited numbers existed. But games like roulete and other lucky games cannot be hacked even you work hard for it so it doesnt makes sense.
I don't know anyone can hack the gambling sites or not?
But if they can then they can be one of the richest people in this wrold so I believe any kind of online gambling sites cannot be hackable.