Well, it's not at all equivalent to an AP, Cloudkey and SG, but they DO have a consumer product: https://amplifi.com/

Unfortunately details are sparse on their incredibly annoying, scroll-hijacking marketing site. But it seems to be a simple enough, plug-and-play mesh network setup, and the industrial design is quite nice. I think Ubnt just doesn't have the marketing machine needed to really push it in the consumer space.