While many things can be reduced to cost, cost is usually trumped by at least two other
factors: loss of job and loss of company.
Each decision has to be made by some individual person. Remember the "noone got fired for
buying IBM" slogan? It simply reflects that people don't mind costing the company more if it
saves themselves.
Loss of company trumps even that. Bad business decisions can be camouflaged, some people have
a personal charisma that allows them to outlive many bad decisions in a company. But no job
can outlive the company. So when given a choice of saving the company $$$ with 99% success
rate, while the remaining 1% will break the company's neck, don't expect the savings to be
taken.
One exception is when the company is about to go bankrupt and not saving $$$ would kill the
company anyway.