Uhh, making a game and making a movie are two different things. Sooo... it doesn't matter who uses what time to make a movie or game.
What I meant is trying to copy the concepts from a movie into a game do not work, exactly what you're saying.
And what I meant by the second sentence is that, you could spend equal development time taking those ideas and refining them into concepts that work well in games, and have a better game than a Shoot-Out that's awesome in a movie, but entirely brutal in a game.
You can't just break all of the rules of a really difficult game and make it super easy just to accommodate a single sequence in which a massive shoot out occurs, but the survival rate of the player, based on the game's previous levels, is absolutely zero, yet somehow the protagonist survives it in the movie
and the game.
Anyhow, in general I think that the fact that we treat games second to movies is the problem. Resident Evil for example, is critically praised for its gritty, hard and scary gameplay but the movies are panned for their generic story, characters and cheap scares...
The public sees Resident Evil, dislikes it and then forms their opinion based on the movie, that the game isn't worth a hoot.
Therefore, a poorly adapted movie, which is more likely to be seen than the source game is to be played, reflects poorly on its source.