This method has problems too. There are more beggars in EU than in other countries in my experience, overall is not doing well.
Are there really more beggars and homeless in the EU compared to the US ? Admittedly, my anecdotal viewpoint is only that of a visitor, but having been to both, it seemed US cities had a far more severe problem.
The first time it was a bit of a shock to me - the US had this patina of glory that crumbled for me after my first visit.
It's obvious why the ultra-rich are building bunkers and hide-outs. Those are of course scams by the building companies, as they give a false sense of security, but the idea of what is REALLY going on is obviously out there.
The main problem being, you can’t operate the bunker yourself. How do you ensure the non-billionaires on your staff don’t murder you and use your bunker themselves? This is assuming a catastrophe that forces a move to a bunker and changes the rules of society.
It’s an intractable problem, billionaires are reliant on the rest of us to do their bidding. That does not change in a crisis/catastrophe.
* If you think taxes and donations will solve the problem with people who struggle with basics, you are wrong. Again look at the world, places like France.