Of course it's reasonable within the system. Inward and outward reasonableness of a system are sometimes quite orthogonal.

It's pretty unexpected that the motivation to work on a medical treatment is not altruism (nor even direct gain from selling the treatment) but is to enable the controlling capitalist(s) to make more money selling food that otherwise the untreated could not consume.

Isn't that a very real example of the lives of millions only being improved because their current hardship is losing capital holders a sales opportunity.