1xbet is owned by BetB2B. BetB2B is a platform, ready CMS that gives them the possibility to create as many casinos as they want with their own CMS and ready-made templates. Basically, they buy domains, use their CMS to create many casinos and scam people endlessly. I don't have valid proofs but I think that 1xBet is the main product of BetB2B, they even had the same brand colours.
As it seems, they forgot to change the name 1xbet with 1xbit on their Korean page. They are the shadiest company that I have ever seen in my life. When I ask them why do they have the same template, they always say that it is just a coincidence and that's all.