First, let me start by saying a warm welcome to the forum,
And what a wonderful and unrealistic way of trying to win gamblers over to your (should I say?) review site, (sorry, I have actually not visited the site to be sure, but it seems like gambling casinos review site to me, but then, this not what's important, what's important is that us knowing how that casino can be able to sustain such a feature and keep it running for a very long time?

I perfectly understand if the casinos have some other games like in the slot and casino games sections, it's possible that the casino can use the funds generated from slot and casino games to constantly fill up the faucet, and when a bettor wins big, the casino can settle such winnings from the money they are making from slot and casino games as well.
But imagine a scenario where every single user don't want to spend money on slot or casino games, but all Want to play betting since it's absolutely for free, what if everyone start betting in sports games and winning, with no funds generated from slot and casino games, how will the casino settle the players who won in the sports betting?

This I would say is a kind of feature, or call it a bonus, that obviously won't last very long, and it's a first win, first basis, only really lucky people will partake of this before it's finally taken down, if this whole is actually real in the first place.