Good sales people simply get to know and have relationships with a lot of people.
Eg, a salesman from LPKF happily traded emails with me after a decade of not speaking and only meeting a few times about a project idea I had… and when it became clear their product wasn’t a fit, offered to connect me with someone else in his network that would be better able to help. I don’t think he seemingly was interested, but rather, LPKF chose to hire someone who is actually interested in getting to know people and helping their projects succeed.
LPKF would have easily closed a sale with me, had their product been a fit — because if you’re someone people want to do business with, good products sell themselves. And people like doing business with people who help them.
I’m not saying there aren’t manipulative and fake sales people; but I am saying there are sales people who genuinely are just trying to make friends and do good business.