[grannyg00se]

There is a minimum circle and a viable circle so it would follow that they must both contain products.

So the circle on the left contains minimum (crappy as they indicate) products and the circle on the right contains products that are all viable - some overdone perhaps.

I'm not sure why it wouldn't make sense that something is minimal but not viable. Any product that can't sell because it is too minimal would fit there.

And the intersection that they are showing is in fact what you are describing: viable and within viable, also minimal. In other words, the most minimal of the viable.