Re: What happens when someone wins consecutively from a casino?
that the casino flagged their account
What happens when someone wins consecutively from a casino? You already answered the question 
I believe that most of the casino would flagged their account or at least they will keep an eye that user. Because consecutively is impossible, maybe win streak one or two times is possible but if you win like 100 times in a row I would say casino would watch you. They might freeze your account and asked some question but I don't believe people always hit jackpot in game like Slot machine or lottery but in the card game the possibility is high
I had a similar experience. I won 50 dollars in one poker room, but my account was not verified. And these misers did not want to pay me this money. They started asking for verification of absolutely all documents, until I started to think that those horses wanted to sell my data, and only then I would get my winnings. I did not want to send them so many documents (I only sent my passport) and they did not want to mark me as Verified. So my 50 bucks remained there...