Yes. Canada only gets to affect the Canadian subsidiary of OVH. Otherwise they can't do a whole lot. Maybe they can do enough though - maybe they can seize the profits from the subsidiary going to the parent company, which the parent company would want to avoid. They have no direct control though.
If it had been the European one that was the subsidiary, then Canada could order the OVH parent company to order the subsidiary to do things.
If it had been the European one that was the subsidiary, then Canada could order the OVH parent company to order the subsidiary to do things.