Oh, that's a real shame. From glancing at the list it seems like Jolla is still too much thinking in nokia/business/corporate terms. Looks like they just use open source as their platform for their own closed-source stuff..
Looks like everything in the opensource list is open source anyway and everything that jolla did is closed.. So no Jolla for me :(
That's unfortunate, I agree, but they didn't say it will remain like this. It's surely far from what Mozilla does with consistent open development for example, but they still can open up Sailfish in the future. If you compare this to Android - it's already waay better. Having 100% open systems would be ideal of course.
There is also Nemo Mobile, from which Sailfish derives most of the middleware (in addition to Mer). It is fully open. There is an on going work to redesign Nemo UI:
Most probably Nemo will be easily installable on Jolla's handset. Or bootable from an SD card there, without wiping the preinstalled system. So this device is a big milestone for mobile Linux anyway, regardless the shortcomings of the closed parts in Sailfish.