From what I understand, Wero is identical to iDeal, which has been the standard Dutch internet payment system for decades. So I'm a bit surprised to see France claim ownership.

Wero is a initiative of a collection of banks from a handful of countries. Every country already had something like this, in some form of another, and now all these systems are getting merged into a common system.

No single country can claim ownership because it's an EU initiative. iDeal was one of the first and relatively easy systems across the EU, but it's hardly the predecessor.

Wero also does peer-to-peer transfers which iDeal doesn't (unless you use iDeal to pay for tikkies but that's still two apps). The new system is not just an iDeal rebranding.