scarcity
@garbados the only reason that food/house/medicine was created in the first place was to make money for the owner of the means of production, from whoever needed it.
Giving it away for free would make less money.
There are some of us who would rather do everything for free, while having our other needs provided for, but it only works if a critical economic mass does it (otherwise the ones who do quickly die of poverty). In the meantime it is very difficult to make that switch.