[Bruno]

Real-life: Australian entrepreneurs sell sand to the Saudis, because the Australian sand is better for desired purposes (construction, and IIRC fake beaches).

Life lesson: it's about matching wants with needs. That's not a Merchant 35 spin-master, and it's not a critical success either - but it's a lot of Research to find your market and advertising so prospective customers can find you.

I'm pretty sure you can sell perfectly clear bubble-less ice to folks inside the arctic circle for ice sculpture. Or sitting on a glacier, or whatever. I don't know how big that market is, but the proverbial large quantities of ice lying around are not artistic grade.