[TheOtherHobbes]

It doesn't seem to be so common among marketing people, lawyers, or politicians - all of whom, in increasing order of severity, might benefit from more if it.

[Joof]

They often have different personalities.

Also: Marketing has a measurable outcome.

Lawyers work like slaves (very well paid ones) and have a measurable outcome.

Politicians do a lot of marketing / fundraising.

Programmers don't always measurably see the value of the things they create. Especially on a large team. This obviously depends on the product.