Not everyone agrees supermarkets should charge for groceries.

I love Spain. They know how to do anarchy.

It is interesting that the rebellion against consumer capitalism is more consumption.

Most people do, since groceries are physical, rival goods to which natural property rights apply. But if it were possible to make copies of groceries while leaving the originals intact, far fewer people would argue against that on the same grounds. They might make other, unrelated arguments against copying, but moral principles applicable to physical property wouldn't be relevant.

That gives you the right to be an artist and not charge for your own products, not the right to steal from other artists who have differing beliefs.

There are reasonable moral arguments against copyright infringement, but the false equivocation with stealing is not one of them.

The same moral principles that argue against depriving people of natural property they already own do not imply further arguments against reducing sales opportunities for non-rival goods for which scarcity has been artificially established via positive law. Other, unrelated principles, can make for compelling arguments, but not the same ones.