Yeah, that model is assuming everyone consistently spends about what they earn without people having a saving/spending personal drift. Which is cool enough, models can assume what they like.

But that certainly isn't how people should operate - if you spend what you earn, sooner or later a surprise will bankrupt you. Helpful tip: nobody should plan to get that outcome. It sucks. Save some money.

Of course! It's the Natural Distribution at work.

Death is natural too. As intelligent people, we're not only obliged but fascinated with the problem of overcoming harmful things in our environments.

This distribution is without merit and counts as a harmful thing. I'm not sure why any intelligent person would be enthusiastic about it when by definition it represents nothing useful, and at worst damages potentially useful economic players for no benefit at all.