Hyperinflation and scarcity started way before sanctions came in and if you look at the sanctions they are targeted at the politicians and not the country itself and really if the oil industry got sanctioned, everyone would probably starve to death in 3 months since we are neck deep in debt with the Chinese and Russian, we depend 100% of food imports and 90%+ of the county income comes from oil, so any direct sanctions to our oil supply could kill our ability to import food thus everyone dies cuz we don't produce shit anymore due to things mentioned in other comments here.