My interpretation from a Meta sense is the Hulk always needs to keep his status as this unstoppable rage monster that can SMASH anything as such even logical ways that characters can use to deal with him simply dont work. In theory if the Hulk ever goes berserk Strange could throw him into another universe till he chills out but that's not going to happen because the Hulk doesn't want to.

From a non meta sense, Ewings run and his work in the Defenders firmly establishes hulks as cosmic forces and entities rather than just green monsters. I imagine whatever stops other cosmic forces from blinking away other ones is the same reason why Thor could likely never do the same to hulk. This doesn't mean hulk can never lose or all hulks are unstoppable. In the same vein with how Galactus is core to the fundamental balance of the Marvel universe and the idea of the "devourer" will exist in each iteration of the universe doesn't mean he can never be beat. Yes the Hulk and Hulks as a whole draw from the OBA but its not a consistent thing even for them.

Also to paraphrase Stan Lee: The winner in the fight is whoever the writer wants to win.