[abstractbeliefs]

A world in which 100% of water was owned by a single (or several in a cartel) company would violate rule 2 - no easy barrier to entry.

If the barrier to entry were lower, another company would form to sell cheap water at high volume.

[pmoriarty]

It sounds like your interpretation of rule 2 would require everything being cheap enough for anyone to buy without the price being a burden on them.