Probably the biggest thing is that capital in the EU is far more conservative.

Incidentally, the early investment for Isar came from Bülent Altan, the Turkish ex-SpaceX guy who was in charge of the guidance system for Falcon-1, Falcon-9 and Dragon.

Very interesting, thanks.

It looks like he was an angel investor in Isar, and then co-founded a VC firm that continued to invest in Isar: https://alpinespace.vc/