> Or when they built their own GPS system and it ended up being far more accurate than any other system in use?

It actually is. But yes - that project was a shitshow for a long time.

Galileo HAS now offers 30cm accuracy with less than 100s convergence time not needing additional correction servers/stations.

Also spoofing resistant thanks to cryptographic signing (Galileo Open Service Navigation Message Authentication).

Both free for use. Forever. Classic GPS doesn't offer this.