I offer the following as a dive professional and practicing trial lawyer, who has been practicing for over 30 years. Liability is not related to"deep pockets," nor does it vary much from jurisdiction to jurisdiction. Liability is always fact specific, meaning that losing a diver in one scenario could render the dive boat company liable to the diver (or their survivors) where on slightly different facts, there would be no liability. What can be said, though, is a dive bot operator is not a guarantor of the safety of a diver from any and all causes of injury or problems a diveer might possibly encounter on a dive from that boat. The original poster does not present sufficient facts or information in the scenario to answer the question. All divers should be safe divers, following safe profiles, rules of the boat, and be decent navigators if not staying with the divemaster led group. Rather than discussing liability in generalities, effort is better spent on keeping the question for ever arising.
Dive safe, dive with a buddy, and have fun!
DivemasterDennis