Even high quality milk is a commodity although a niche commodity.
Think of it this way. There is an art piece that is being produced millions of times and people even buy it multiple times. It's a commodity because it's consistent. It's always the same.
If every art work was different then it wouldn't be a commodity.
The same applies to specific brands. They are a niche commodity. Each pack of milk is identical. The amount of milk you buy is the same in each pack (within tolerances of course). You don't care which cow ended up producing the milk. If each pack of milk was labeled with the cow it came from and each pack had a different quantity of milk it wouldn't be a commodity.
Think of it this way. There is an art piece that is being produced millions of times and people even buy it multiple times. It's a commodity because it's consistent. It's always the same.
If every art work was different then it wouldn't be a commodity.
The same applies to specific brands. They are a niche commodity. Each pack of milk is identical. The amount of milk you buy is the same in each pack (within tolerances of course). You don't care which cow ended up producing the milk. If each pack of milk was labeled with the cow it came from and each pack had a different quantity of milk it wouldn't be a commodity.