They aren't if you learn to do them yourself. Building a shelter, killing your own food, sourcing your own water, keeping up with your own sanitation problems -- all of these should be learned by everyone.
Oh, you would rather pay someone to grow your food, handle your sanitation needs, bring your water? If they are doing this for you, they need some profit to pay another person to do the things they don't have time for because they are working for you.
Essential life services could mean giving everyone a tent, matches, and a fishing line. Everything above that becomes a comfort item and a reasonable amount of profit to compensate the provider isn't morally repugnant.