@Gfplux and @katherina are quite correct - you really can't compare what happened here in France with the "well, maybe stay in, just for a bit, but pop out if you need to" UK version.
I have just commented on another thread with figures for where I am:
Our department has a population of just over 250 000. There have been 5 deaths since February. There are 6 people currently in hospital with the virus.
Still, the quarantine regulations now mean that DH won't be getting back to the UK to visit his 94 year old mum who lives alone.
a) 14 days is far too long for a visit (house is kept at the approximate temperature of the sun and TV volume can probably be heard in a galaxy far, far away).
b) the point of going would be totally defeated if he was unable to leave the house.