Honestly, I would have given all my money to get this information two years ago.
Unfortunately, these list are already operating more than 2 years ago before this listing, and investing in these sites are not that profitable anymore that year or even now. Although i dont know if some of them are still operating their investment scheme.
That is true, some of the casinos listed on the list have been around for a while now and their customer base is already large so the have lowered their bankroll reward and even the percentage on balance have been lowered.
Bustadice for example their bankroll operation has been running since 2018 and even though there have stopped promotions they still have large loyal client's base that could support their community even if their bankroll reward is lowered it doesn't affect their business, so I can still trust them for investment.