I realise they don't manufacture many of the components, I was more thinking having the right license arrangements to develop drivers for them - as I understand it, half the battle is having access to the technical specifications, and the right to publish an open driver using that knowledge. They do run AOSP, after all, though with some blobs involved too.

I suppose it isn't an entirely all-or-nothing thing anyway, and Jolla can move drivers over to the native side as and when they can and it helps - I can't imagine the libhybris layer sits between the OS and literally the entire hardware.