Correct about the king holding 100% but don't worry about it because things will go South long before that.

The difference between the king holding 50% and holding 95% doesn't matter, 10 times the amount of an abstract unit is still an abstract unit. It's like feet vs. meters.

The change in the unit matters though. With the king accumulating gold, or Saylor accumulating Bitcoin or tech companies accumulating dollars, money is withdrawn from circulation and everyone has to recalibrate their yard stick a.k.a. prices. This causes confusion in the system and interrupts the flow of goods and services. You can literally starve with all the grain in the fields.

Just ask dimwits like nostr:npub12262qa4uhw7u8gdwlgmntqtv7aye8vdcmvszkqwgs0zchel6mz7s6cgrkj  or nostr:npub1xtscya34g58tk0z605fvr788k263gsu6cy9x0mhnm87echrgufzsevkk5s who are losing customers because of a recent recalibration of the ratio of money supply to services offered. They could have asked those questions beforehand but hey despair can be overwhelming and impact your reasoning.