It should be and in a way it means you have beaten the casino, but most of those who win jackpots are gamblers who I think find it hard not to go back to the casino and even if they take a break to enjoy their jackpot win, they will definitely come back in the hope of winning it again. Since jackpot wins are hard to come by and only happen once in a lifetime by luck, and with the high expectation of winning it again in the long run, it can potentially lead to losses that can exceed the jackpot won which is actually the result of previous losses and most don't realize it. So when you do hit the jackpot, it is better not to go back because that is the real win.
Some people can really win a huge amount from jackpots, a life changing amount such that even if they go back to gambling, it will take a very long time or years before they can spend all that money on gambling, especially if they are responsible gamblers, they will not even spend so much on the casino again but could use the money to do something meaningful, either an investment or business which will constantly yield profit for them. Someone won a jackpot lately on one of the casinos on the forum and the money was huge, if that gambler has not lose up to that amount be won, that means he really beat the casino.