in my case, in the world cup challenge, I didn't win anything, unfortunately I wasn't lucky to have won at least a penny, I agree with you that in all these challenges, or at least most of the challenges, the whales or the people who put them have an advantage a lot of money in the casino to play with, people who can play with 10,000$ or more per week, they get more chances when it comes to any contest that involves buying a ticket or something else
the world cup challenge was a great example of a challenge where both people who have a lot of money and people who don't have a lot of money would have the same chances of winning the contest, but these types of challenges are not profitable for the casino, at least they are not very profitable, I think that way because people were participating in the contest without spending money and the casino would be spending money on having to pay them when they win, contests that involve buying tickets and whales buy a lot of tickets so casinos win a lot in this type of contest, just like the lottery in the real world, the rich are the ones who have the greatest chance of winning the lottery, strange that in the past on TV they showed faces of poor people who won the lottery, today they are very rare cases in which they see someone without money win the lottery the maximum prize
That has been the case for every single bit of promotions there has been in any casino ever. Even in raffle type stuff, even though we have a chance with a single ticket, the guy with 5 million tickets because he wagered 150 bitcoins total would have a bigger chance.
I have to say that life is not always fair and it should not be "fair" it should be just, and that means the guy with that much money at risk is providing something more to a casino and they should get more because of it, you and I not having that much money is not the whales fault, and why should be try to balance the rewards towards people like us when whale did nothing wrong and deserves what they have.