And there is a pan-European system, gallileo.
Trouble is, Gallileo want to make money. They sit on the same bands as GPS (US DoD system) and are currently negotiating exact frequencies and code orthogonalities with the US.
My view, it is in Gallileo's (France's) fiscal interests to stuff GPS up so it becomes less reliable, they can then charge to use their system as a backup or suppliment.
US DoD have GUARANTEED free accurace access for the life of the system (which is essentially limitless as US need it for everything from surveying to bombing any arab that moves), so really I can't see a business case for PAYG GNSS.
Gaunty
I hope you aint thinking the US 'dither' GPS. It aint gonna happen. I think offset tracks are an education issue, just as important when flying the little lines on an ENC or flying coastal up and down the coast.
I USUALLY offset to the right flying coastal (except around Mission beach where the sky darkens with unannounced meat-bombs!!!).
AK