If you send money to an online dice site or casino and pull the lever to see if you have won you depend on the players before you being convinced to send money in, in order for you to profit.
No, now you guys are just making up dumb excuses. Thats a gambler's fallacy that any of your previous rolls, or anyone's for that matter, have an effect on your upcoming rolls.
Does the sequence of events matter? In other words, does it matter that my winnings come directly from the person who gambles after I do? If they come from the guy who gambled before me, that makes it OK?
Of course the sequence of events matters!
If you log in to a Dice site, make a deposit of BTC and roll, you have no idea whether the wins/losses of the people before you will mean you will find yourself fortunate enough to be joining in at the best time in the algorithm or the worst. Your wins and losses are not knowingly dictated by the players before you, although they are a factor, the players before you have no way of knowing how their playing will affect your playing.
If you join a Ponzi and send money in, you then have to seek out other people and convince them to send money in so that you don't end up being the user who doesn't get paid. The purpose of joining the scheme is to *not* be the mug who doesn't profit, so you have to post encouraging words in their threads to rustle up some other people who, through your post, will be encouraged enough to send in their money, resulting in some of their money being shared with you.
Your profit comes, not from a provably-fair algorithm unaffected by other players but, instead, a mathematically unsustainable process of finding other people to take the fall for you.
But now we're just talking about the rules of particular gambling games & best strategies to use. Some gambling games have a strong skill/social component (bluffing in poker comes to mind), others do not (dice).
Dice [in principle] is a game of pure chance, inevitably impoverishing its players (on the average) due to house edge. Some clearly like losing, see gambling addicts. No sane human being (who is not trying to launder money) would use a dice site, just like no sane human being would use a ponzi site. But we're not a mental health organization, we let people keep their kinks.
Ponzi is a more interesting game, that's all. Everyone but the operator will lose, on the average, but that's neither here nor there