Ruckus Wireless offers the MediaFlex HS, a $200 device aimed at helping hotspots shape traffic, net revenue: The device uses the multiple-antenna beam-forming system found in other access points and bridges sold by the company, but offers the ability to create multiple virtual networks (SSIDs), each of which has unique properties. This could allow a hotspot to offer a lower-tiered free service, and a higher-tiered premium service, with the latter providing video and VoIP support. Ruckus isn't offering bandwidth throttling, but rather employing quality of service in such a way that one virtual network could have its video and voice packets assigned full priority over another.
Ruckus definitely identifies the need for hotspot operators to have someone more than the commodity gear that lacks flexibility, like multiple SSIDs to restrict network access for different purposes, but for which the much more expensive enterprise APs are overkill and hard to manage.