I haven't seen anyone taking up gambling as a career but I have seen many taking it up as a pastime to spend their free time. To make gambling as a career, regular income from gambling must be possible, which is not possible at all from gambling. So no one wants to accept this uncertain possibility as an integral part of life. If there was a guarantee of payment, maybe many people would take up gambling as a career.
Your statement is very right for this because it would be very ridiculous if someone starts making gambling a career for a certain period of time with the condition of not being sure of winning every day. But if it is meant for gambling service providers such as bookies and others, of course it makes a little sense because they will definitely get more profit than loss from it. But for individuals who only use gambling services, I think it is more impossible because there is no win for the same person every day in a gamble.
Maybe we can only read on the news site without have a chance to meet the luck person who can success from gambling. We also don't know if that news is real or not as we difficult to prove by ourselves so we can only believe on that news site. But yes, we will not know who are those people who use gambling as a career and can success from gambling. Using gambling as a career and success with it is not easy as many people already tried that but they failed to gets success instead going to bankrupt from gambling.
It is better to achieves success from other things than from gambling because we will have the opportunity to reach that. If people want to make money from gambling, they should build their own casino and promote it so they can have many members that playing gambling on their site. That will gives them a chance to make a lot of money and achieve the success in gambling.