HWD
I agree with your assessment but
"pay to use Galileo will ensure levels of service, which is arguably necessary for commercial certification"
is straight out of the Galileo
PR 
In reality, the only guarantee of anything whatsoever in this world is the extent to which somebody wants it to be available, and nothing is more "wanted" than Navstar. Galileo is guaranteed to be a white elephant for a time; the only question is how long for.
I expect Galileo will be authorised for GPS approaches only in its "pay per view" mode but who cares? Navstar is about 10x more accurate that is needed for en-route. And we all have to carry VOR/DME/ADF/ILS anyway.
Here in the UK, the CAA wants so much money for approving instrument approaches, and this together with their insistence on full ATC is preventing loads of airfields having GPS approaches. Nobody wants to spend the money, for the tiny extra traffic. In the meantime, commercial ops working out of such airfields get themselves a private unpublished IAP based on a nearby navaid....