Do you know why EU has a history of outsourcing core systems to non-EU entities?

Is it just because it is (or was) more cost effective? I mean EU has tons of talent, so it's hard for me to believe it's a lack of resources

Maybe it is too costly or too difficult to start up in the EU?

I haven't done too much research myself. I don't know the stories of anyone who tried to compete against palantir/google/boeing/etc