Feasible, yes. Practical, hard to say. Good idea, yes.
RISC-V is open-source architecture based in Switzerland (although it started in University of California).
One thing going for it is China is spending billions a year towards RISC-V adoption so they do not get sanctioned by the US. You need money and engineers working on it towards these type of open source to compete with existing players.
I know it's needed, but I'm always worried about the French budget. Their debt to GDP is not healthy right now. On the other hand, the Germans should be spending more.