Earlier quoted context omitted.
Not sales. Marketing. In today's world having someone push a new database for a hefty price is not going to work. I would need to be able to test it against mongo and decide myself that it is better... but how would I know it's even an option?
Is there a firm line between sales and marketing these days? Is sales just the high-touch end of the marketing continuum?
IMO, no. Sales and marketing are pretty different things.
Marketing isn't "sales without people", and sales isn't "marketing done in person". They target different problems, and you may need one, the other, or both to be convincing, depending on the product or service.