You must have missed these videos... ...where GOSY demo's use of Kinects (which are based on http://www.primesense.com tech) in their CareBot at the Marriott recently. It's on GOSY's front page here: http://www.geckosystems.com/
Yes, not only in business but improving the lifestyles of elderly and handicapped people across the world with their product. The market of mobile service robots and collission proof wheelchairs is in it's infancy so to declare it unsuccessful is a bit premature in my opinion. I also feel that the millions of lives this technology has the ability to improve makes the world a better place. Don't you?