Gaming needs better Writers. or at least adapt novels more.

[Nuvendil]

There are games with good writing though. I don't think that adapting books is the solution though, because games have different qualities vs books and movies. Same as any new medium. It would result in better stories, sure.  But unless the writer for the game is already highly skilled, the adaptation will just limit the potential while simultaneously still being poorly done. 

However, there does need to be more effort put into writing. That's one of the areas I actually aim to work in personally someday. Hopefully. A lot of games focus too hard on making the plot action crazy and over the top at the expense of shallow characterization and lack of internal conflict.