@atpfm @siracusa I think this pretty directly says that it was in response to the European Commission, not just the antivirus companies. https://web.archive.org/web/20061023112233/http://software.silicon.com/security/0,39024655,39163277,00.htm

Via @carnage4life

Microsoft backs down over rivals' Vista access - Security Strategy - Breaking Business and Technology News at silicon.com

@fifthrocket “Concerns” are less concrete than actual regulations (or directly communicated feedback from vendors).
@siracusa If the younger kid goes to mom crying that her older sister took her toy. Next mom says “I'm concerned about what's going on here”, and the older sister gives the toy back.
Did the older sister do it because of the concrete complaint from the younger sister, or in response to the concern from mom?