Yes, people can and do win real money at online casinos. Many online casinos are legitimate and operate fairly, providing players with a chance to win through a variety of games such as slots, blackjack, roulette, and more.
It is an irrefutable fact that people win jackpots at online slots unless, of course, you go to a rogue casino. As long as the online casino you choose has a good reputation, you are guaranteed to win real money.