The Russian system works primarily because equipment manufacturers have figured out how to compensate for its considerable flaws.
The European system is a joke. We do not need more accuracy, certainly not down to centimeters. What we do need is a fully separate system built completely different from GPS to provide a solution that compensates for the weeknesses in GPS (which is an aging technology!)... the original deaign for it provided exactly this but the politicians in Brussels decided to and a provission to assure its compatible with GPS technology. This is like saying we are goig to build a new supercomputer but load it with DOS.... then when the budget cutters came in they said “why do we need a super computer if we are just going to run DOS? Why not build something cheaper?” The result is that they basically spent €€€€€ copying our antiqualted and flawed system with the only positive being that the US military can’t shut it down.
And even that’s a joke. If the US Military decides they want to shut down GPS they are going to shut down GLONASS and Galileo too.... which, as mentioned, is too not difficult for anyone to do.
Eloran, on the other hand, was based off completely different technology from GPS making it very difficult to spoof both systems simultaneously. BTW the USA got the idea for a completely seperate and redundant system from the original Galileo specs!
So, yes, The European system (Galileo) is better (marginally) than GPS and not at the mercy of Uncle Sam. But how, exactly, does that help any of us?