Not really a "must" to have a lot of money to reach those levels. Sure you still need a good amount of money, but I have seen people do 2000x which means 1 btc could be a good enough level.
I am not saying that's how you can do it, maybe you will fail and not be able to do it, but for 2000 btc wagered, that doesn't require 2000 btc as well, it requires maximum of 10 btc and that's still a lot but that's about 160k dollars lost, we have seen people losing hundreds and hundreds of bitcoins in the crypto world even when bitcoin was a lot. Just last year when it was high I saw someone losing 300 btc, so it is not really a shocking result to me, it's normal in the crypto world.
But we're talking about the famous whale, named Real Winner. He's a regular in BlackJack.Fun, a high roller player who plays almost everyday in the casino. Rolling
BTC2000 with just
BTC1 as your capital, he would need to be very lucky not to lose it all. I'm sure he can win and/or lose more than
BTC1 in a week. Plus if you're a regular player, and having just
BTC1 as your capital, you must follow some strategy for capital management to protect from big losses.
I believe Real Winner is a BlackJack, and a Plinko regular?
but I think it doesn't happen at all times but most of the times I can only wager sufficient amounts because it will be a loss to the casino if they make their games easier for the players because you know, we can also get rewards through wagering and amount of it can base on how high or low we wager.
Whales have big budgets so it is more possible for them to wager that high even at all times because once they lose their deposits, they can always redeposit again and again till they hit their desired wager amounts.