Jolla knew about GPLv3 in advance of the design of platform. A license Google has avoided by choosing BSD userland tools instead of the GNU counterparts and build the platform upon a homegrown Java WM instead on relaying tools used by most Linux dists. If Jolla wants to keep developing SailfishOS as a distribution which shares many libraries and software tools with a desktop based Linux distribution they need to accept GPLv3 as they can't go on with old versions of gnu tools such as the gcc compiler or qt 5.6 forever nor can the maintain a fork of these tools for years to come. I don't want Jolla to be the new Nokia.