The Supreme Court HAS spoken to the individual right to keep and bear arms. Specifically.

In United States v. Verdugo-Urquidez, 494 U.S. 259 (1990), the Supreme Court said the rights enumerated in the 4th, 1st, and 2nd Amendments are the same, individual rights.  Though dealing primarily with 4th Amendment claims, the section of this decision below seems to use the individual nature of the 1st and 2nd Amendments as examples for the individual nature of 4th Amendment rights.

My emphasis in bold italic below.

The Fourth Amendment provides: [494 U.S. 259, 265]

"The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized."

That text, by contrast with the Fifth and Sixth Amendments, extends its reach only to "the people." Contrary to the suggestion of amici curiae that the Framers used this phrase "simply to avoid [an] awkward rhetorical redundancy," Brief for American Civil Liberties Union et al. as Amici Curiae 12, n. 4, "the people" seems to have been a term of art employed in select parts of the Constitution. The Preamble declares that the Constitution is ordained and established by "the people of the United States." The Second Amendment protects "the right of the people to keep and bear Arms," and the Ninth and Tenth Amendments provide that certain rights and powers are retained by and reserved to "the people." See also U.S. Const., Amdt. 1 ("Congress shall make no law . . . abridging . . . the right of the people peaceably to assemble") (emphasis added); Art. I, 2, cl. 1 ("The House of Representatives shall be composed of Members chosen every second Year by the people of the several States") (emphasis added). While this textual exegesis is by no means conclusive, it suggests that "the people" protected by the Fourth Amendment, and by the First and Second Amendments, and to whom rights and powers are reserved in the Ninth and Tenth Amendments, refers to a class of persons who are part of a national community or who have otherwise developed sufficient connection with this country to be considered part of that community.