Exactly, you fight and destroy their fighting, IED makin and, comm capabilites and infrastructure.
I am not saying that if a chance of killing a comdr arises the army won't take it.
Ofcourse they will kill/ capture him (Capturing is more imp than killing). But it is more of a symbolic gesture rather than a long term gaining thing, because another comdr will take his place.
Specific to the taliban if a comdr losses his AOR, his fighters and most importantly his own home and village, then his reputation is tarnished and fighters start leaving his speific group.
Going in hot prusuit against one tgt would mean putting 100s of lives at risk against something that might achieve less strategic obj and cause more uproar in the intl community.