Exactly right. Many posters don't seem to understand that, to...

Exactly right. Many posters don't seem to understand that, to stock a new product, the supermarket must get no longer sell another. This is because shelf-space is essentially fixed, so the uptake of one product line effectively means the deletion of another. Given that basic fact, a new product will only be stocked if it provides signifciantly higher risk-adjusted profits than existing lines.

And, given that fact, you have to ask yourself: If I ran woolworths, would I delete a well-established IMF product to stock one that almost no one knows about? Not really, eh?