Why do we even compare those two in current digital era? Of course online casinos are more accessible, have more clients and more addicted as well. If we take whole period, starting from first gambling appearance and until today, offline casinos made more addicted gamblers. Nevertheless, it is all individual. In online gambling, people gamble for lower amounts than offline. I think that offline gamblers want to return and win back what was lost more than online gamblers. When online gamblers gamblers more often.