Re: "The decision will please US authorities"
I don't think this decision has anything to do with that. The French would quite easily use North Korean kit to piss off the Americans, if it thought it was safe. This the usual French industrial politics: IIRC Nokia got what was left of Alcatel-Lucent's networking kit and, as it's already in use at Orange, sticking with it makes most sense. Ericsson, Nokia and Huawei already cross-license much of the relevant IP so it shouldn't mean too much of a delay. For the technology that nobody in Europe needs right now™ anyway.
A lot of noise about 5G is being made by industry bodies basically looking for handouts.