Three Sales Mistakes That Software Engineers Make: https://www.pipelinedb.com/blog/three-sales-mistakes-software-engineers-make
My main objection: The reason software engineers make these mistakes is that not making them involves doing things that engineers don't like to do:
#1 = Doing other things than engineering
#2 = Listening to normies talk about themselves
#3 = Exerting pressure on people
I know what being on the other end of #3 feels like, and it's not pleasant. Rejecting people is almost as uncomfortable as being rejected.