We have seen some of the MCU films adapt classic comic book storylines such as Infinity Gauntlet comic book series, Civil War comic bbook series, Captain America: The Winter Soldier, X-Men: Days of Future Past, etc. But how come we have not seen a Iron Man film adapt one of the best Iron Man stories called "Demon in a Bottle"?
https://en.wikipedia.org/wiki/Demon_in_a_Bottle
https://en.wikipedia.org/wiki/Days_of_Future_Past