you haven't read up on your dogma - most anarcho-capitalists praise
charity as virtuous and philanthropic because it is a voluntary act
by the wealthy.
and, yes, there is some truth in that - welfare can create dependancy,
as can charity. the alternative, letting people starve or suffer
untreated illness or homelessness is worse.
it's also a good argument for legalising and regulating the supply
of heroin and other drugs of dependancy
but anarcho-capitalists don't give a fuck about sustainability - future
profits and income are irrelevant because it might be someone else who
gets them. they want to plunder and loot whatever they can now and to
hell with the consequences.