A ruling by the FCC's Office of Engineering and Technology is an echo of the Bristol, Virginia decision that "any" means "any."
Airports, malls, and condo associations, among others, have been trying to limit the use of WiFi, primarily for financial reasons. The mall owner or airport authority wanted the revenue sharing from providing exclusive access to the facility from a single vendor. It's a form of bandwidth aggregation that does not always benefit consumers because not everyone benefits equally--the WiFi vendor and the property owner have a controlling interest in setting fees and keep all the profits. Bandwidth aggregation as a thinly veiled monopoly rarely benefits consumers.
Airports, as frequent travelers know well, are notorius for high access fees, averaging $10/day for a typical fifteen or twenty minute use as you pass through. The FCC ruling says the FCC alone can determine who may or may not deploy unlicensed WiFi services. It's a victory for consumers, and the FCC deserves a tip of the hat for doing so.