> The oil industry for example is making a mess of the environment, but many people rich.

They also make our mega-sprawl suburbs possible. It's a cop-out to pretend like oil companies aren't getting rich giving people what they want.

Glass to hold and transport milk is more of a waste than plastic. You can tell because the cost of using plastic is evidently lower.

Only if the costs of each are accurately encoding their externalities. There can be a long delay before this happens, if ever.

No, not really. The externalities of the plastic is inconsequential. The externalities of glass are probably higher. Have you calculated them?

No. I'm guessing you haven't either, since no one can. Such confidence in the market. Is/was the market price of Thalidomide, asbestos and cigarettes also perfect?

edit: I'm not saying that Tetrapaks will turn out to be terrible, just pointing out that things are priced with complete ignorance of their eventual externalities.

And how is the cost of the plastic fragments in the ocean factored in in this example? It won't be zero in the long run.