They weren't doing too great at the time of purchase. I imagine this was another patent farm buyout and then sold, sans important patents, to someone else.
BD doesn't really have a product. There's nothing to sell. Even the military scoffs at these very noisy[1] and difficult to maintain robots, especially when they have a literal army of 18 year olds who don't mind carrying 40lbs packs into battle.
BD makes pretty demos and does good research but it can't be monetized, yet, if ever.
[1] https://qz.com/582991/the-us-marines-wont-be-using-googles-r...
Kyle Olson, a spokesperson for the Marines, told military.com on Dec. 22 that the noise the LS3’s gas-powered engine gave off was tactically rather unhelpful. “As Marines were using it, there was the challenge of seeing the potential possibility because of the limitations of the robot itself,” Olson said. “They took it as it was: a loud robot that’s going to give away their position.”