Hey Spark I get what your saying for sure as I work in the I.T. world and I get all the time. Hey I got a question for you when you have a minute!

I have a sticker up in my office that says. "No I Will Not Fix Your Computer"

But as a sales person or business that sells something unfortunately what your talking about goes with the job/business. All Sue has to do is talk to this guy once and then he says to another guy hey if you want a whole system Sue is who I would go to she helped me and didn't think twice!
As you well know I am sure word of mouth can be everything in your own business!! And helping some folks/future possible customers is just part of it!
RC