[ghaff]

Because your average engineer is so good at creating customer relationships and generating revenue.

Customer relationships are certainly more important in some categories than others but sales is certainly key in a lot of B2B organizations.

[AndrewKemendo]

I guarantee I’ll be more successful with a group of engineers doing sales than I would a group of sales people trying to do engineering

[ghaff]

Both would generally be crap in isolation. (Assuming non-overlapping skill sets such as solution/system engineers.)