Earlier quoted context omitted.
The correct response to a fixed supply of water is rationing, not either fixed or floating prices. Because without water you die, or catch diseases from poor substitutes. With a fixed price, whoever comes in first gets the most water; laggards die. With a floating price, whoever has the most money gets the most water; poor people die. Neither of these is morally superior. IMO.
I suspect water could be considered a special case, since it is so immediately necessary. What if, instead, we were talking about bread? Assuming that rich people are fairly rare, then raising the price of bread high enough to be expensive but not so high that people cannot pull enough cash out of their pocket to pay for it, then the effect seems to me like it should be an approximation of a ration. Clearly if Donald…
(There might be some justification for putting in some extra-windfall tax, though. I am not sure.)