Sailfish has been very publicly maturing since the launch of the first phone. We've (mostly) been patient about this, but OEMs trying it out in their R&D depts probably wouldn't be so forgiving. Maybe the improvements over the last couple of updates and the polish of Sailfish 2.0 will have brought it to the point where it's possible we might see some 3rd party Sailfish phones soon. There were some strong hints of a greater interest at MWC this year.