Why common systems beat a single European frigate hull

How much did British destroyer losses contribute to the failure of the Horizon frigate project?

The deeper problem was conflicting national requirements; shared systems and scalable national hulls would have worked better than one common ship.

The British, French, and Italian navies wanted ships for different seas, ranges, and missions. A scalable family, like the later Type 26 approach, could have served them better than a single mandatory design. Shared radars and weapons offer economies without forcing every navy into the same hull compromises. Regular British operations in the North and South Atlantic demanded a different hull emphasis from French and Italian service in the Mediterranean. A later exchange suggests that practical weapon commonality was already emerging and works best as an operating standard rather than a politically imposed universal ship.