What does mechanical engineering have in common with big game hunting?

Curious what After Sales has to do with it?

Some truths are uncomfortable because they contradict the self-image. A large number of machine builders are still convinced that they make the most money from tailor-made machines. This is usually wrong, because these machines cause a lot of effort in the engineering department and the entire manufacturing.
Mechanical engineers achieve the highest margins with what appears to be a small side business: After Sales.

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