We don't have any "pristine" riviera here for a long time ago anyway. That's why french people like me just travel to the mountains on holidays to have a chance to see something "pristine". Or we go to the hidden, unknown places on the riviera.
Well, Russians need to invest their black money somewhere anyway.... But it's not that dramatic. Don't care for all what newspapers say. They don't invest that much, just buy a villa from times to times down there.