Agreed. With $5m in the bank you basically never have to work again. Retire early. However you don't really have enough to be a philanthropist or start capital-intensive startups. Could become|continue a serial software startup guy, since no risk to your retirement. You have a nice house and nice car and lots of savings.

With $500m in the bank, you get the above plus you can be a philanthropist and personally fund many sorts of capital-intensive startups. You have a mansion on an island, and a yacht and a helicopter and many exotic cars.

The difference between any two orders of magnitude is never inconsequential, I'd argue. There's always so much more you could do at higher levels. And not necessarily talking about self-ish pleasure-seeking things but world-changing, humanity-improving sorts of things.