EPA [0] and EPI [1] are doing that.

[0] https://en.wikipedia.org/wiki/European_Payments_Initiative

[1] https://en.wikipedia.org/wiki/European_Payments_Alliance

That's exactly what's happening, see the EU digital euro scheme. It's planned to be free of fees too, modeled around how SEPA was done for wires.

There has been massive resistance by the incumbents of course, including banks (since they too charge a fee on top of visa).

It's been in the backlog for years but the US sanction against ICC judges leading to them being cut off from most things including payment triggered a renewal of it.