There's plenty of proof out there to suggest that 1xbet and 1xbit are
probably owned by the same people.
https://bitcointalk.org/index.php?topic=5384944.0Above link is just one piece of proof. You can find more proof by searching this forum thoroughly to find legit links between them. Seems like they all operate under the umbrella of a bigger and more powerful company basically.
So three Russian guys manage 1xbet and it's known but when you research 1xbit owners it's kinda anonymous and we have to take a guess. I found that Wikipedia also listed them as subsidiary company so probably it belongs to same group of people.
I just wonder how 1xbet manage to actively do partnerships with big clubs such as FC Barcelona, Paris Saint-Germain and LOSC Lille but on the other hand 1xbit reputation goes down deeper every day. That's something you wouldn't expect for a billion dollar company to do.