That can't be said for the trusted bookies like Stake or many others that are operating out there, they wouldn't limit a gambler only because they win their bets, but they will surely do it if they suspiciously win every single bet that they place which surely raises a red flag about the player, and not every single casino will limit the same player for that one issue you mentioned.
OP has probably violated some rule that every casino has in their terms and conditions and that is the reason why he is limited in almost all of the platforms. Helping him in anyway would only get the helper in trouble if suspected.
I agree with @pop3r5 please avoid spreading fake news while not even belonging to their campaign, there are enough paid shillers spreading BS about them on all threads. If you read carefully all the threads opened against them here, you won't say that anymore. They really look more dishonest and unprofessional than most of fiat bookies. They have no scruples about limiting or banning winners without notice, even if they used to spend large amounts of money in the past.