I will agree that the case itself applied to only the District of Columbia and it restrictive laws. BUT the 2nd Amendment applies to the entire nation, and the 14th Amendment applies to all citizens of the United States, don't they?
The 2nd Amendment reads very simply to me, to quote;
"A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
The Court has ruled that this is an Individual "RIGHT" and therfore applies to all people, because a "Right" can not be granted to only the people of the District of Columbia. And the phrase "Shall not be Infringed" seems to be pretty clear in its meaning and definate to me.
And by the way here at the time that the Bill of Rights was being adopted the word State here did not refer to the "UNITED STATES" as a whole it refered to the 13 individual states that were to comprise the New United States.
So yes, The Heller Decision does apply to all of us. The Heller Decision took this matter out of the hand of the State Governments, by ruling that this was an "Individual" right, belonging to the people themselves, and not a "Collective" right, belonging only to the State.
In other words The "CASE law" established by the Heller decision will effect all People rights.