I hear this a lot and at first sight this seems to make sense since we have almost the same slot games on different casinos and the same game providers.
However, there is more than slot games on casinos and gambling isn't just hitting the spin button and wait for the result.
The gambling experience is different on every casino even if you play the same game.
Wrong. How exactly is it that different? 3rd party games are literally the same games while in house games use different skins with similar mechanics. Performance of these games is also pretty similar based on what I observed.
The only differences are the house edge, promotions, VIP systems, deposit and withdrawal fees etc between these sites