I think that all casinos are concerned about their reputation and want players to feel safe and not cheat in games. However, not all casinos can afford high security costs. Therefore, casinos often compromise on security and the cost of providing it.
The casino will know how to deal with the cheat, and maybe they don't have to hire or pay high-security costs, but the casino can use another way. But I am sure the casino can install a hidden camera on their place so the security can watch the activity on every table, and if they find someone trying to cheat, they can directly get that person.
All the casinos are Packed with cameras. The number of cameras per square meter is huge. And no matter how perfect the cameras are, as well as the many places where they are placed, I think there is nothing better than professional people in the hall who are usually looking for cheaters.