At some point, there's just not enough money in it to justify the continued development and support costs. Up until the time the Solo came out, drones of it's class were selling in the $1000 to $1500 range. Not a whole lot long after the Solo was release, prices plummeted and now retailers are having to sell a whole setup - Solo, gimbal, battery, for as little as $500. They probably went from expecting profits of upwards of $500 per complete Solo/gimbal package, to easily under $100. At that point, they just can't offer the generous replacement guarantee and continued software development. Next year DJI will release the Phantom 5, and even if the Solo can still hold it's own, people will take what they perceive to be state of the art over a 2 year old setup for the same price.
It is unfortunate, as the Solo is still an amazing platform, but between the changing market and their missteps (long delayed gimbal release, issues with poor GPS performance, etc.), I just don't see them making another attempt at the consumer drone space.
I guess what I was implying was why doesn't 3DR bring a new consumer drone to market. I'm sure they learned a lot. Maybe there are some crazy venture capitalists out there still willing to throw money at 3DR so they could buy back some of the Solo devs and even recruit some DJI ones and come out with a super consumer drone. I still think there's plenty of opportunity. Did they tarnish the 3DR name? Perhaps but I feel the name is still worth something.