Coalize why didn't the strict gun laws in France prevent this robber from getting guns?
Because they are criminals...
Are you also afraid of going to Switzerland?
That is a relevant question !
The big difference between switzerland and USA, is that you can't buy a gun at the cornershop. Only well-trained military conscript have the right to keep a gun home. It's a country where everybody is a militian, because they don't really have an army, because of their historical statut of neutrality.
And only 0.52 for 100 000 annual rate by gun homicide (but it's still more than in France).
And all the guns are considered like "service weapons". You can use it only if the governement, by decret is authorizing you to use it! In case of state emergency! You can't use it at all for protecting your material goods...
Then the switzerland is a perfect counter-exemple of your position, in fact...