And the execs won’t really worry about "how hard the salesmen can screw them", they know the rules of the game and understand that negotiations are negotiations. It’s a negotiator’s job to try to get a good deal, and that works both ways.
Yes. Devs who don't know sales are obviously not their demographic, they'll be speaking to layers of other biz dev people before they even get to the execs, and each one knows exactly how to extract concessions and discounts, and the opposing salesperson knows exactly how much of a discount they can give. In this way, it is much more of an efficient market than most devs think.
Devs' reaction to all this is honestly the same as when a non-technical exec tells a dev why they "can't just get it done in a day, it shouldn't be that hard right?" People have their own competencies and are usually blind to others'.
