Vincent I agree.. there is thin line between TAM and ICP !! ICP are at early stages and TAM when we are scaling, IMO.
Tony W. Fair Point, but again case basis! If I've a product that is generic (Ex: Social Media Platform), my ICP (Age: 18 to 60) = TAM (1.5 billion people) ..
I understand the nuances but still.. both the points are considerable.
Yet, the point remains, even for you to filter the ICP, there should be a metric to prioritize one over the other..