You can see that there is demand for a product (and, therefore, make that product), while misestimating the scale for that demand. It's what leads to failed pro

You can see that there is demand for a product (and, therefore, make that product), while misestimating the scale for that demand. It's what leads to failed products (when you overestimate the demand), and Apple has had a few of those. Why is it so weird that they would also underestimate the demand for other products?