Well I wasn't talking about time commitment "in general".
I too have spent 500+ hours in Skyrim and hundreds of hours with games like Company of Heroes, the Total War series, and so on...even ended up with something like 150 hours in DAO.
The difference between the time commitment in DAI versus those games I've referenced is that it took 100+ hours to play through DAI ONE TIME.
My 500+ hours with Skyrim was divided up between 4 or 5 different characters using different races, classes, playstyles, and choosing different larger questlines dependent on the character (example: an assassin character doing the Dark Brotherhood, a Nord doing the Nord side of the civil war, etc). The time with DAO I had was comparable to DAI but again - that was split between 2 or 3 DIFFERENT characters, choices, etc.
Maybe it's because I'm older and don't have the luxury of sitting around all day playing games, maybe it's because I like to play all kinds of genres and so new, interesting games I want to play are coming out once or twice a month, but I just don't have the time or the attention span to put 100+ hours into A SINGLE playthrough of a game.
Overall, my point is that a game like DAI begs you to experience it more than once so you can see it from multiple angles with different classes, races, choices, world-states, and so on. Yet, the idea of committing 100+ hours EACH TIME to do so is just not appealing to me.