http://www.cornandsoybeandigest.com/are-1000-acres-part-time... “One of the most difficult factors for many 1,100-acre or less farmers to accept is that, unless they have livestock, they're probably underemployed. Thirty years ago, 1,000 acres was enough to support Dad, me and three hired men. ... As one industry sage puts it, “It's not the 1,000-acre farmer that needs to worry. They can still support themselves with off-farm income. The guy who needs to worry is the 3,000- to 5,000-acre farmer who knows he needs to reach 10,000 acres if he wants to stay in business.
But engineering and sales for a single product are inextricably linked. If engineering does not create a good product, that directly affects the success of the sales people; and vice versa if the sales team sucks then a great products potential value can go unrealized.
Are they under-represented and under-valued? Probably. Just like IT, they only get noticed when things screw up or go wrong.
It is a radical proposition that a farm day laborer adds more value than an elite tech worker because 'the system would stop without food'.
The value add is controlled by the person who decides what "value add" is. That is the executive, original product designers and customers (who may well be represented by marketing in some businesses, I dunno).