Once a month something like this is posted by a brand new account acting innocent and putting on a show to try and get some money.
Stake isn't limited to just people on bitcointalk now. You guys went global with a partnership with Drake and got streamers on twitch playing slot almost 24x7
https://www.twitch.tv/directory/game/Slots
OOT suggestion: The integrity department of Stake should expand its scope and include basic human ethics as well
https://www.statista.com/statistics/1125170/twitch-app-us-users-age/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3334397/
This individual placing bets obtained their profit from betting on sports not casino on 15+ accounts. They made these accounts to circumvent limits and restrictions put on previous accounts and have used their entire extended family's ID along with other potentially bought or borrowed ID's in an attempt to get around these limits. We have a number of methods that gave us very high confidence to link these accounts far beyond the ID's used. I don't want to share all details of the investigation as they will try to find ways to circumvent in the future. They have made a substantial profit all in all because of their use of a bulk of accounts.
What I still fail to understand is, how can someone make any kind of profit by creating multiple accounts?
Were they farming referral bonus? But given how there's almost a 10%~15% house edge on sports betting, it's impossible to farm a referral bonus. Maths won't add up.
The only explanation would be betting on rigged matches by using multiple accounts? But we don't see such a claim made by Stunna or Stake in their original communication. Their bets aren't on E-sports either(which is very prone to fixing). Most of them are on major football leagues, french open, basketball leagues, etc and OP has been transparent in sharing all of their bet slips.
I am left with only one explanation, which is 1xBet'esque: Banning winners, keeping losers https://youtu.be/pjfs5i0UXzI
Again, this is my opinion on the matter. I would love to see more explanation over this. Because I am not content with Stunna's current explanation.
OP has raised some good questions too.