Originally Posted by The Endless
It's like the comics. Cap's comics are individual stories in his little pocket of the MU. Same with Stark's and Thor's. Sometimes they cross over or team up, but those are usually in cross over events.
The situation is much worse in the comics since almost everyone is based in NY but its rare to see more than one property show up to beat the big bad at least in the movies the locations are spread out more: Tony is on the West Coast, Steve is in DC, Thor is in London or Asgard
SHIELD was told to back off in IM3? When? Where?