Food, water, shelter, and healthcare are not things one chooses to buy, but things one is forced to buy to survive.
Under a free market you choose whom to buy your food, water, and shelter from.
Water is less free than the other two markets, because water through plumbing can only come from one state-sanctioned monopoly. But there are many ways to get water outside of plumbing.
To buy these, you need money. To get money, you need a job. You also need enough money saved up to survive after you can no longer work a job.
Yes, life still requires effort, even though we have civilization. When I refer to freedom, I am not referring to unconditioned consciousness arising from pure void, or whatever matter-and-energy-free state you seem to think free markets should be compared to.
To get and maintain a job you need to buy some other things. Exactly what other things varies by job and climate, but in general: clothes, transportation, phone, electricity.
That's a lot of things that you cannot willingly choose not to buy if you want to live.
Same points repeated.
Yes. In case there’s any confusion, “free market” does not refer to a state of being free to choose whether to eat, sleep, drink, etc. Freedom in this case does not refer to a godlike state of unconditioned bliss.
What that means practically, in this discussion, is that when a person is selling water in a free market, nobody is forced to do business with them because they have competition.
A person who gets rich selling water in a free market does so by providing the best water at the best price.