These type of "anyone can win something" giveaways are very very important for casinos to attract more numbers. Normally if it is mainly based on what the wagering amount is, or deposit bonus for a lot of wagering rollover and many other things then we are going to end up with something upsetting if we do not have too much money. It means that we should be focusing on how much we could get for very little if we are poor or at least do not want to spend too much on gambling.
I could afford to gamble as much as 1000 dollars right now, and I could either make it like 1 dollar each for as guaranteed of a win as possible (remember those 98% win chance dice rolls) and that would mean until my 1k is over I would have probably 90k+ wagered in dollars. However I do not do it, why? Because, I do not want to lose that much. These giveaways are for people like me, and not just for whales, and that is very important.