Technically that only states that employers /think/ they provide value not that they actually do it. It may fit inside their expense margins but that doesn't mean it is valueable only that it is viable from /something/ in it. This is an important distinction - the higher level up means not seeing all of the details and they have their own biases.
To give a deliberately absurd example a rich madman made $5 million per year from his vinyard and winery for personal and spend $1 million on running the place to the highest quality, $0.5 million buying piles of bananas and $2 million on mercenaries paid to beat the piles of bananas with baseball bats so they don't plan a rebellion he would still make $1.5 million a year profit could make $4 million a year profit if he didn't spend so much money on repressing fruit.
Silly example aside it is possible for both employee and employer to be both right or both wrong. An employee might notice low level waste that could be avoided by not repairing defects, and the employer knows that the cost of labor to fix it is more expensive than materials for a new one. Even if the one strategy is right both have a point.
Or in the reverse both employee and employer could think that the new fangled automobile won't be able to compete with horses because of vast fields of grass for free on the plains and even hay being cheaper than gasoline.