The average US rec book has one job: identify winners and pinch their stake sizes until they leave. Nothing personal, it's just the business model. Crypto books mostly don't do this, with two documented exceptions on our review list. Here's how the game works, which operators play it, and how to spot the early signals before your account gets neutered.
You don't get banned. Banning a winning customer looks bad and generates complaints with paper trails. Instead, your max bet quietly drops. First from $1,000 to $500. Then to $100. Then to a number so small it isn't worth logging in for. The book never has to explain itself because nothing in the terms says it can't adjust your limits "for risk management purposes," which is doing a lot of work in that sentence.
Stake sportsbook users have reported being cut to a $100 per-bet ceiling shortly after a winning stretch, as described in a thread on r/Stake, with a separate r/Stake maximum limit discussion describing the same pattern from a different account. Rainbet has its own version of the problem, documented in a case where esports bets were voided and limits were cut to $0.05 during a Valorant grand final, as one user detailed in a post on r/gambling.
A max bet that drops after three or four consecutive wins, not after a big single win, is the tell. It means the book is watching your win rate, not your bankroll. A "risk team" email asking you to explain your betting pattern is the polite version of the same thing. If your bet slip starts rejecting stakes it accepted last week with no stated reason, that's the limit dropping in real time.
Bet105 markets itself on "winners welcome" and we didn't find any documented complaints matching this pattern during research. That's not a guarantee it never happens, it's just the current state of the public record. See our Bet105 limits deep dive and the wider operator comparison for how the five books on this site stack up.
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