the testimony was raised by rollbit, not the player who managed to get the win, and it seems that the players who use big money to play so that they can achieve big wins, not many will show their victory because it could be risky for him and usually the one who shows it off is the player who wants get followers.
But if I'm not mistaken, has anyone ever won bigger than that on rollbit
Some players want to share their big wins while some want to remain silent but as you are aware about the username only your position is not at risk completely and you can do it.But still it's our own preferences and casino needs it as advertising promotion to attract new players.If talking about big wins then yes there must be similar big wins before also on Rollbit like the NFT lootboxes giving away million dollars BAYC and punks.
It's not "just" development neither, they talk with people here and make decisions based on what people say. That's the main difference. I have seen plenty of places that did what you say, developing more and more but they just do whatever they think would make them the most money.
On the other hand, what I am suggesting here is that we have a situation where it's not just making profit for them, but whatever we suggest as well, and that's very precious. Not a lot of places would add something that won't make them profit right away, hence why would they add it? It's not a profitable thing. So, we should be supportive of them doing it anyway.