Casinos do require a lot of capital, it doesn't mean that they are a scam at all if they are asking for bankroll help. It is great on both ends for them, if the casino loses money from a big whale winning a huge amount it doesn't really hurt their bankroll since people are covering for it and they are also not keeping any capital at making sure casino has enough money.
Think about it if you had 100+ bitcoins and owned a casino which one would you rather do, keep the money at a cold storage so people could win and lose or would you rather use that to do marketing and attract many more people ?
Casinos usually spend their money on marketing and improving the website and basic operational costs like wages and so forth instead of keeping the money idle for potential losses. That is why bankroll investment is great for them, even if they are big.
People will think twive before they made an investment suddenly because nowadays there is a lot of scam site who just make site for scamming. That is why I can say they shouls put some bankroll for the start before they can try to open an investment. Investors will try to analyze how their progress from time to time before they believe it is worth of investing
They even need to have bigger bankroll so they can attract more people from their marketing or games. This bankroll need to have their portion to make sure everything going to be good
It doesn't even look good for marketing purposes let alone investment. I mean just hire a legendary account or a sr. account or whatever and make them publish the title for you instead, they literally made a topic with no pictures because it has no account level to actually share pictures, so it looks like just 3 links and that's it. Who would want to invest into something that much unknown to the world.
Normally you get a casino going and then ask for an investment, you do not ask investments from people on your first day. Get a bit known, get some big wins and losses, let the public know you are here, get signature campaigns and bounties and what not, eventually when you are known enough only then you should be asking for investments from the public to increase the max bet.