There won’t be any issues if you’re losing or if your winnings are small. Problems arise when you start winning large amounts. At that point, bookies will review your account, and if they find anything that doesn’t adhere to their regulations, that’s when the trouble begins.
It could be different for most cases but even so, if it's on the rules of the casino that they don't allow two accounts for one IP. Whether you've been losing a lot, I think that a point of time will come that they'll have to give that short notice of closing the two accounts. But see for oneselves if there can be some experiment being done but be open for any consequences that will be done by the casino. In most cases, the large winnings are really triggering to get some background check for those accounts or gamblers that are consecutively winning as that's what's concerning to them. It's true that if one just losses more money, they won't be bothered with those accounts.