I wouldn't be so sure about that.
How much are they actually betting , and how volatile are the slot machines? (The less variance, the more likely none of them will be a winner after playing for ~2,000 hours.
Math tells us about what is likely or unlikely to happen next.
Luck is a way to describe what has already happened.
Ok math fine.
What is the probability of ending up 0 or winner after 2500 bets? Thats how much you would be in 1 say year.
Well if the slot machine has a hose edge of 0.5%, then each bet is 49.5% chance of winning. However you have a 99.5% chance of shuffling the money around and not giving it to the casino. So if there would be no house edge you would have a 100% chance of ending up breakeven in infinity, but in our logic the house edge is what drains away our money
So after 2500, bets you`d have a 0.00036116184612908900% chance of ending up at least break even.
That means that in a pool of 1 million players we`d have on average 361 players that would end up winners after the 2500 bets!