The only people protected by the higher ceilings are the upper middle class or the rich that haven't bothered to diversify by having accounts in more than one bank... a few percent of the population at most. In the long run, we're all dead. John Maynard Keynes
Plus, when you get that kind of money, you have countless cabinets calling you to sell you investment devices. You'd have to be determined to leave everything in the same place.
So, I know several hundreds of people. I am pretty sure that I don't know anyone who has deposits over the €70000 French limit in one bank. I'm not sure I know someone with so much in deposits at all. "The womb that spawned that thing is fertile yet"
