> Both Scaleway and OVH are French

Doh, I meant Hetzner

> partly made possible by France's inexpensive energy mix

Not really. Both developed well before the energy crisis when energy wasn't a significant input for DC construction.

The reason both succeeded is because French conglomerates continue to invest within France and only buy French.

It also didn't hurt that Xavier Niel and Klaba were able to leverage their preexisting telecom business and network.