Do we all agree?

[mprep]

Of course. Where does a litre of water cost $150?

If you're on a desert island and you're the only one with a gun and a bottle of water, it can cost thousands.

That is if your gun is loaded...

[jackjack]

Of course. Where does a litre of water cost $150?

If you're on a desert island and you're the only one with a gun and a bottle of water, it can cost thousands.

That is if your gun is loaded...

Also on a desert island you can't control the food + the water + the raw materials + ...
Each of them will be necessary to live.
And as counting with millions of currency units is not practical, all the prices are likely to drop.

[apsvinet]

Do we all agree that one BTC has more value than one liter of water?

This depends, perhaps to a dehydrated man in the middle of the desert the water is more valuable. o.O
But just determining value in money then yeah, a btc is more valuable, obviously.

[Omikifuse]

Well agree... Only if the water supply was cut off...