I believe there are a small number of people who win the jackpot even though that person is not a regular gambler or meaning he only played a few times so it can be said that he beat the casino, but if you look further this is not entirely true because there are also those who win the jackpot after several years of playing and if calculated with the total loss during playing maybe the jackpot still cannot cover the loss besides having to look at the losses of other people so it can be ascertained that we cannot beat the casino because they are designed with a system that always profits, this is business.
However, Gambler that play rarely but manage to win huge jackpot are the majority of winners due to their less exposure on casino house edge that is the main reason why most gambler is in loss.
Those playing long term and manage to make their overall PnL in positive is very rare but possible.
But for me, It’s all about user perspective on how they view won in gambling because a simple enjoying casino game is already a win for some gambler.