If by "corporate greediness" you mean seeking to maximise profit, then the vast majority of basic necessities (food, clothing, basic consumables, medicines etc.) are already exposed to this. Most governments accept that private companies are able to provide these more efficiently and at better quality than they can.
There may be a separate case for nationalising certain industries (e.g. public goods, which to be tend under provided by the private sector) but it has no relationship to how greedy companies are or whether the goods themselves are necessities. Either the private sector is better at supplying them or not.