I guess the separation of the s/w and the h/w Jolla business will help as a 'safeguard' for Sailfish.
Jolla is clearly more interested in developing Sailfish than in throwing more and more resources into designing the hardware that would best feature SFOS, and so a clear line of separation on who works on which aspect (probably with the core of the old sailors on the s/w side of Jolla) will probably best help them going on with the planned business.