While it would be unfair to say that America's actions in Vietnam were the fault of the French, there was certainly French encouragement if not outright manipulation.
I tend to agree. Even now the French can't maintain a cohesive relationship with their client states, which is why they've lost influence severely in the Sahel. They just didn't know when to be cohesive and how to be extractive.
France was dumb because they barely did any extraction while they exploited the natives.
I'm sorry but your characterization is very strange given the history. Portugal and Spain were just as brutal as the French.
I don't believe anyone still gave a shit at that point or expected ghadaffi to redo after he paid for it. I think it might be better to look at the deals of BP and such in the area.