From personal experiences, I get bored majorly when gambling for a longer period of time online unlike when I gamble in physical casino. Online casinos make you self isolated which is kind of frustrating especially when you aren't winning as you expected.
Both casinos has it's benefits but since we humans are social animals that depends on social interaction to keep life moving, the benefits in regards paying for a longer period of time has to go to physical casinos. I do understand that some addicts might spend hours gambling online but that can't be compared to the fun and excitement associated with gambling physically which will obviously contribute to the longer period.