it would have sucked as an open world game. alan wake and quantum break definitely need FOCUS that only a linear game can give. open world works well for many games, but not all. my main reason for this is the lack of focus....take tomb-raider for example, your friend is held in a prison and going to be burned at the stake any minute....but the game doesn't mind if you want to go rock climbing or relic hunting all over the show for hours......it spoils the flow and feel and makes the story pretty much secondary to the overall experience.
Part of Alan wake's brilliance was having the gameplay match the story driven nature.. you felt you needed to progress at all times, even if sometimes you were scared to.
especially with games that have a story / TV show feel as Alan wake and quantum did.
Imagine 24 if jack Bauer had spent half his morning reading the paper in a coffee shop and taking a dump? sometimes linear time focused and confined is better.
Wouldn't consider Tomb Raider an open world game, but I know what you are talking about. I find that in a lot of games:
"Oh, I really need to go do this very important thing or save somebody... but that doesn't mean I can't have a little fun first"
In my game, Alan Wake would often pause the quest to save his wife to watch an episode of bright falls XD
edit: It's also pretty weird how in 24 Jack Bauer never has to drink, eat, pee or shit. I just imagine he does that during the commercial breaks.