the author doesn't ignore that, necessarily.
long-term profit IS still profit.
" --- A stupid person is someone who causes damage to another person, or a group of people, without any advantage accruing to himself (or herself) -- or even with some resultant self-damage. (We shall come back to this, because it is the pivotal concept of the Cipolla Theory.) -- "
The author ignores the fact that some groups of stupid people are so dangerous that they must be damaged, even if the immediate [or long term] result is self damage at no gain.
the author doesn't ignore that, necessarily.
long-term profit IS still profit.
There is no individual/self profit in dying to defend liberty, -- for instance.