That said the Galileo project really looks like it is very badly managed, which is sadly rather common for European projects of this kind, especially on the military side of things. Even smaller projects with only a handful of countries tend to have so much overhead that it makes you wonder if going alone would not be cheaper...
Have you heard about the new system the UK was building to replace Galileo? https://www.theguardian.com/science/2020/jun/26/satellite-ex...
By comparison to the UK, the EU GNSS is a paragon of technical expertise and efficient project management.
Examples for such behavior abound but people judge with their feelings rather than the facts because EU citizens would rather assume they're in a stronger position, and US citizens would rather assume they're in a morally superior position.
> Under US pressure the EU has agreed to use transmission frequencies that could be easily disturbed or completely jammed by the US military. [0]
> The US has already leaned hard on European officials to abandon the €1.1bn (£772m) project. [1]
[0] https://tech.slashdot.org/story/03/12/01/1226207/galileo-sys...
[1] https://www.theguardian.com/uk/2003/dec/08/world.internation...
I also agree that fewer levers remain and we can see this with all the EU's recent political, legal, or economic moves that no longer really fall in line with US policy.
It appears "easily disturbed" means "on a different frequency."
Also the system is designed to be a primary reference, not just a GPS backup, and European taxpayers have paid €10 Billion for it. For that much money it should work correctly.
https://www.esa.int/Applications/Navigation/Galileo/Why_Euro...
To which I would opine: because the contractors working on them, and the layers of management managing them, and the funders funding them are well aware they're "me too"-systems.
No offense intended to the people working very hard on Galileo (of whom there are no doubt many), but it's hard enough getting contractors to give a $&@+ about actually critical systems.
If you tip your hand and let them know it's not really super important, is anyone surprised you get half-hearted effort and slipshod results?
That said, I'm yet to hear of a large contractor that cares, no matter how critical a project. Private market to me feels, in general, like the school system: with standardized testing and modern curricula, we get consistent but mediocre results, but we achieve that by filtering out anyone who cares about anything other than gaming the system.
It does not need to be "hot failover" - such things don't change that quickly. You might put up a few more dishes and satellites if that need actually becomes imminent in some future, but as you say, for now it's fulfilling its purpose.
Galileo is also for trade reasons, so that reduced access can't be threatened. And it's also a military tool, after all GPS had been on reduced accuracy for a long time and this could happen again. And keeping an active technology development of such a vital infrastructure in house.
And for the consumer it's all great as most receivers can combine all these networks into improved accuracy.
Sounds like "the hostiles" wouldn't actually need orbital shoot down capability, they'd just need to knock out a bunch of those 20 ground stations. A team of guys with consumer drones and a half a kg of C4 each ought to be enough I'd guess. That's only "criminal gang" grade opponents, not even close to state level. (Or, you know, a bunch of random conspiracy nut QAnons or ProudBoys wound up on social media to believe the ground stations cause Covid or are part of a Jewish global banking conspiracy...)
But there are "cold" scenarios where bombing ground stations wouldn't be kosher but denying GNSS services might be. That's what Galileo insures against. I don't think those scenarios are particularly likely, so it's awful pricey insurance, but it's also a very important capability so opinions may differ.
[1] https://en.wikipedia.org/wiki/American_Service-Members%27_Pr...
I sometimes wonder if there is a model of GPS-like behaviour from the LEO objects, to get to something similar, but clearly not the same.
https://arxiv.org/abs/2009.12334
“This paper shows that continuous assured PNT (positioning, navigation, timing) service over ±60° latitude (covering 99.8% of the world's population) with positioning performance exceeding traditional GNSS pseudoranging would cost less than 0.8% of downlink capacity for the largest of the new constellations, SpaceX's Starlink.“
The eventual wider public ownership of satcomms, worldwide consortia, is a continuing story. Every nation state owns the vertical slice of air above its borders, they all have to talk about what happens in RF and satcomms orbiting through.
only to 100km altitude. above that it's international space, pretty much how the middle of the atlantic is international space - free for all that manage to get there
And in this case the problem was more geological in nature.